<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>54889</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>326</pageFirst>
    <pageLast>340</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>STP 1626 - 15</volume>
    <type>bookpart</type>
    <publisherName>ASTM International</publisherName>
    <publisherPlace>West Conshohocken, PA, USA</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">New large-scale 750 bar Oxygen Pressure Surge Test Facility</title>
    <abstract language="eng">The Oxygen Pressure Surge Test (OPST) is considered to be best practice for evaluating the burn out safety of plant components and testing the compatibility of nonmetallic materials for oxygen service. Nevertheless, there are only a few laboratories worldwide performing the OPST. The Federal Institute for Materials Research and Testing (BAM) already operates oxygen pressure surge test facilities with maximum OPST pressures of 450 bar.&#13;
However, to ensure technical innovation and to enhance research and development, the decision was made to develop a new and large-scale oxygen pressure surge test facility. Due to the size and the high potential impact energies, the test facility is located outside of Berlin at BAM Test Site for Technical Safety (TTS), where large scale testing is carried out. In addition to an intended maximum OPST pressure of 750 bar, there is the possibility of testing industrial equipment with large inner volumes and diameters. The new quick opening valve constitutes the core of the system and was developed by BAM. It allows to perform tests with the standardized pressure rise times of 15 ms to 20 ms or with adjustable pressure rise times at higher or lower values. As a result, it is possible to provide customized test parameters for specific practical applications as well as research projects.&#13;
This presentation shows the status quo of this unique test facility, its performance, its technical specifications, and its new possibilities for research and development for a long term enhancement of burn out safety in oxygen application.</abstract>
    <parentTitle language="eng">Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres</parentTitle>
    <identifier type="issn">0899-6652</identifier>
    <identifier type="isbn">978-0-8031-7698-0</identifier>
    <identifier type="doi">10.1520/STP1626-EB</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Andreas Woitzek</author>
    <author>Thomas Kasch</author>
    <author>Kai Kittler-Packmor</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Oxygen pressure surge test</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Adiabatic compression</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Burn out safety</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Innovation in OPST facility</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Adjustable pressure rise time</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">2 Prozess- und Anlagensicherheit</collection>
    <collection role="institutes" number="">2.3 Einstufung von Gefahrstoffen und -gütern</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>59384</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Ultraschallunterstützte Zerspanung mit geometrisch bestimmter Schneide schwer spanbarer Werkstoffe</title>
    <abstract language="deu">Das hybride Fertigungsverfahren der ultraschallunterstützen Zerspanung wird mit geometrisch unbestimmter Schneide wie bspw. dem Schleifen bereits erfolgreich in der Industrie eingesetzt und verspricht auch unter Verwendung von Werkzeugen mit geometrisch bestimmter Schneide vielversprechende Vorteile gegenüber den konventionellen spanenden Fertigungsverfahren. In den letzten Jahren wurden an der BAM positive Ergebnisse beim ultraschallunterstützten Fräsen (USAM) von schwer spanbaren Werkstoffen wie z.B. Ni-/Co-Legierungen oder Eisenaluminid für den Leichtbau erzielt aber auch die Finishbearbeitung von schweißtechnisch generierten Bauteilen (AM) bspw. aus FeNi36 konnte hinsichtlich erreichbarer Werkzeuglebensdauer sowie Oberflächenintegrität zur Verbesserung der Komponentensicherheit beitragen. Die mittels USAM erzeugten Oberflächen erscheinen homogener und weisen weniger Defekte infolge des Materialabtrags auf, was sich ebenfalls in verringerten Rauheitskennwerten abbildet. Durch die geringere thermo-mechanische Belastung der Bauteiloberfläche sind Eigenschaftsdegradationen zusätzlich reduziert. Besonders großes Zukunftspotenzial besitzt das ultraschallunterstütze Fräsen durch die Erzeugung von erwünschten Druckeigenspannungen bis unter die Bauteiloberfläche, was auf die oszillierende Wirkung der Werkzeugschneide - vergleichbar mit einem Strahlprozess - zurückzuführen ist. Druckeigenspannungen tragen maßgeblich zur Risssicherheit hochbelasteter Komponenten bei wie sie bspw. in Turbinen vorzufinden sind und können somit zum Leichtbau und zur Ressourceneffizienz beitragen.</abstract>
    <enrichment key="eventName">Technologietag Ultrasonic DMG MORI 2023</enrichment>
    <enrichment key="eventPlace">Stipshausen, Germany</enrichment>
    <enrichment key="eventStart">11.10.2023</enrichment>
    <enrichment key="eventEnd">12.10.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="InvitedTalks">1</enrichment>
    <author>Julien Witte</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschallunterstütztes Fräsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Oberflächenintegrität</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Werkzeuglebensdauer</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schwer zerspanbare Werkstoffe</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>59389</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Technologie und Werkzeuge für ultraschallunterstütztes Fräsen von Eisen- und Titan-Aluminid-Bauteilen</title>
    <abstract language="deu">In der Abschlusspräsentation des ZIM-Kooperationsvorhabens "TeWuFeAl" werden die wichtigsten Ergebnisse zusammengefasst dargestellt. Ziel des Projektes war die Entwicklung einer Prozess- und Werkzeugtechnologie für das ultraschallunterstützte Fräsen von im Kokillenguss hergestellter Eisen- und Titan-Aluminid-Bauteilen. Auf Basis einer eigens entwickelten Werkzeugtechnologie und Prozessführung konnten die Belastungen auf das Werkzeug und die Oberfläche von Bauteilen aus dem schwer zerspanbaren Eisenaluminid bei der frästechnischen Bearbeitung signifikant verringert werden. Die Messung der Prozesskräfte und der thermischen Belastung der Werkzeugschneide ermöglicht die Ermittlung geeigneter Zerspanungsparameter für eine maximale Werkzeuglebensdauer. Die Anwendung des ultraschallunterstützten Fräsens (USAM) wirkt sich vorteilhaft auf den Zerspanprozess aus. Neben einer deutlichen verlängerung der Werkzeuglebensdauer, zeigen sich Vorteile in Bezug auf die topographischen, metallurgischen sowie mechanischen Eigenschaften der erzeugten Oberflächenintegrität. Die durch USAM erzeugte homogene Bauteiloberfläche weist eine reduzierte Defektdichte und verringerte Rauheitskennwerte auf. Besonders vielversprechend sind die Ergebnisse der Messungen der Eigenspannungen im Tiefenprofil der Oberfläche. Die Werkzeugoszillation bewirkt eine, vergleichbar zum Strahlprozess, Verdichtung der Oberfläche was in Druckeigenspannungen resultiert. Diese potenziell vorteilhaften Druckeigenspannungen können maßgeblich zur Risssicherheit hochbelasteter Komponenten und somit zum Leichtbau und Ressourceneffizienz beitragen.</abstract>
    <enrichment key="eventName">Abschlusstreffen ZIM-Vorhaben "TeWuFeAl"</enrichment>
    <enrichment key="eventPlace">Lampertheim, Germany</enrichment>
    <enrichment key="eventStart">06.07.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Julien Witte</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eisenaluminid</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschallunterstütztes Fräsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Oberflächenintegrität</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Werkzeuglebensdauer</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>59263</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Fachvortrag: Innovative Probenherstellungim Lichte der Proben-Bauteil-Beziehungen</title>
    <abstract language="deu">Der Vortrag erörtert die aktuellen fachlichen Herausforderungen und Ziele in der Zentralwerkstatt/FB9.2 der BAM für den Helmholtz-AK "Bau wissenschaftlicher Geräte"</abstract>
    <enrichment key="eventName">Helmholtz-Arbeitskreis "Bau wissenschaftlicher Geräte", 18. Jahrestagung</enrichment>
    <enrichment key="eventPlace">Berlin, Germany</enrichment>
    <enrichment key="eventStart">10.05.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="InvitedTalks">1</enrichment>
    <author>Dirk Schröpfer</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Probenfertigung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Erneuerbare Energien</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Additive Fertigung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Wasserstoff-Sicherheit</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>62293</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Neues aus der BAM / Fachbereich 9.2</title>
    <abstract language="deu">In dieser Präsentation werden die neuesten Herausforderungen und der Stand des Fachbereiches 9.2 für die Mitarbeit im AK des HGF "Bau wissenschaftlicher Geräte" dargestellt. Hierfür werden Neuigkeiten aus dem Bereich Materialprüfung in der BAM präsentiert und mit den Arbeiten der Zentralwerkstatt, die hierfür notwendig sind, in Zusammenhang gebracht.</abstract>
    <enrichment key="eventName">Helmholtz-Arbeitskreis "Bau wissenschaftlicher Geräte"</enrichment>
    <enrichment key="eventPlace">Berlin, Germany</enrichment>
    <enrichment key="eventStart">12.06.2024</enrichment>
    <enrichment key="InvitedTalks">1</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Dirk Schröpfer</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Fertigungsverfahren</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Fertigungskompetenz</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="themenfelder" number="">Wasserstoff</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
  </doc>
  <doc>
    <id>53488</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>6</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>27</volume>
    <type>conferenceobject</type>
    <publisherName>Springer Nature</publisherName>
    <publisherPlace/>
    <creatingCorporation>RILEM</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A new approach towards scientific evaluation and performance-related design of bituminous joint sealing materials and constructions</title>
    <abstract language="eng">While there is a permanent improvement of concrete pavement mixtures and pavement construction types over the last decades, the state-of-the-art joint sealing materials and joint constructions seem to stagnate on an antiquated empirical level. This status has been reaffirmed in the latest European standard. The consequences in the motorway network due to unsatisfying capability and durabilty of joint sealing systems are unacceptable. In addition, inadequate traffic performance (noise emissions, roll-over comfort) and traffic safety losses in the joint area of concrete pavements are existing challenges. These deficits and weaknesses reflect a demand for joint sealing materials and constructions whose approval requirements take functional aspects into account. Furthermore a sufficient analysis of decisive loads and a practice-oriented method to evaluate the requirements towards performance and durability is still missed. In this contribution decisive loads to German highways are analyzed. The design of test specimen for representative functional testing of joint sealing systems is discussed. The focus is on the geometry of the test specimens and the used concrete mixture. Finally, a new approach for a function-orientated test concept that considers representative load functions is presented. The potential of this approach to validate the durability and capability of various joint sealing systems is also presented using an example.</abstract>
    <parentTitle language="eng">Proceedings of the RILEM International Symposium on Bituminous Materials - ISBM Lyon 2020</parentTitle>
    <identifier type="isbn">978-3-030-46454-7</identifier>
    <enrichment key="eventName">RILEM International Symposium on Bituminous Materials</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">08.06.2020</enrichment>
    <enrichment key="eventEnd">10.06.2020</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Janine Buchheim</author>
    <author>Christoph Recknagel</author>
    <author>Patrick Wolter</author>
    <author>Kai Kittler-Packmor</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Joint sealing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Expansion joint</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Performance testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Capability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Durability</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.1 Baustoffe</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>53643</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Experimentelle Charakterisierung der WIG-Schweißeignung einer Hoch- und Mediumentropie-Legierung</title>
    <abstract language="deu">Equiatomic multi-element systems with defined entropy are a relatively new mate-rial concept for alloy production. These alloys consist of at least five elements in equiatomic distribution in the case of high entropy alloys (HEA) and three to four elements in equiatomic distribution in the case of medium entropy alloys (MEA). Previous studies on these alloys have focused primarily on their production, micro-structure and the resulting material properties. Meanwhile, the focus here is on the processing of the alloys and their influence on future applications. Up to now, there has been insufficient knowledge of the materials and processes involved in weld-ing. &#13;
In this work, therefore, the weldability of a CoCrFeMnNi-HEA and a CoCrNi-MEA by means of a TIG welding process was investigated as a basic system. To this end, the welding parameters were first determined on a reference alloy (Ni-based: 2.4858) and transferred to the welding of the CoCrFeMnNi-HEA and CoCrNi-MEA. Weldability was assessed by testing the absence of defects and microstructures obtained. The weld metal exhibited the dendritic microstructure typical of TIG, with microsegregations forming as interdendritic phases. Increased hardness was de-tected in the weld metal compared to the base metal. In the heat-affected zone, there was little grain growth and, in both alloys, the formation of hot cracks after welding. The cause of the cracks was to be found in the specimen preparation, which had an influence on the subsequent processing. After elimination of this in-fluence, no welding process-related imperfections were found in the CoCrFeMnNi-HEA and CoCrNi-MEA.&#13;
In summary, both materials show good fusion weldability by TIG welding. The re-sults of this work thus contribute to the understanding of the weldability of HEA and in particular for CoCrNi-MEA, which was considered in this depth for the first time.</abstract>
    <enrichment key="eventName">Verteidigung Masterarbeit Otto von Guericke Universität Magdeburg</enrichment>
    <enrichment key="eventPlace">Magdeburg, Germany</enrichment>
    <enrichment key="eventStart">20.10.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="RelatedIdentifier">https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/53644</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Marcel Giese</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochentropielegierung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Mediumentropielegierung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>WIG-Schweißen</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>59262</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Helmholtz-AK "Bau wissenschaftlicher Geräte" - Neues aus der BAM / Fachbereich 9.2</title>
    <abstract language="deu">In dieser Präsentation werden die neuesten Herausforderungen und der Stand des Fachbereiches 9.2 für die Mitarbeit im AK des HGF "Bau wissenschaftlicher Geräte" dargestellt.</abstract>
    <enrichment key="eventName">Helmholtz-Arbeitskreis "Bau wissenschaftlicher Geräte", 18. Jahrestagung</enrichment>
    <enrichment key="eventPlace">Berlin, Germany</enrichment>
    <enrichment key="eventStart">10.05.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="InvitedTalks">1</enrichment>
    <author>Dirk Schröpfer</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Werkstatt</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Erneuerbare Energien</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>51593</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>12</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Manufacturing Innovation Network e. V.</publisherName>
    <publisherPlace>Varel, Germany</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Vom Kokillenguss bis zur Fräsbearbeitung - Bauteile aus innovativen Eisen- und Titanaluminiden wirtschaftlich herstellen</title>
    <abstract language="deu">Der Beitrag gibt einen kurzen Einblick in das gerade bewilligte ZIM-Vorhaben „Technologie und Werkzeuge für ultraschallunterstütztes Fräsen von Eisen- und Titan-Aluminid-Bauteilen (TeWuFeAl)“. In dem Vorhaben wird durch 2 KMU aus dem Bereichen der Werkzeugentwicklung (Wolf GmbH) und der Anwendung (AWB GmbH) sowie durch 2 Forschungsinstitute, Access e. V. und Bundesanstalt für Materialforschung und -prüfung (BAM), die Herstellbarkeit sicherheitsrelevanter Leichtbauteile aus FeAl und TiAl durch das besonders wirtschaftliche Kokillengussverfahren und die anschließende ultraschallunterstützte Zerspanung untersucht.</abstract>
    <parentTitle language="deu">Unter Span - Das Magazin des Manufacturing Innovation Network e. V.</parentTitle>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Dirk Schröpfer</author>
    <author>C. Hamm</author>
    <author>T. Röser</author>
    <author>H. Michels</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eisenaluminid</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Titanaluminid</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Kokillenguss</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Fräsbearbeitung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschallunterstütztes Fräsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Oberflächenintegrität</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>53644</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>1</pageFirst>
    <pageLast>79</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>other</type>
    <publisherName/>
    <publisherPlace>Otto von Guericke Universität</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Experimentelle Charakterisierung der WIG-Schweißeignung einer Hoch- und Mediumentropie-Legierung</title>
    <abstract language="deu">Equiatomic multi-element systems with defined entropy are a relatively new mate-rial concept for alloy production. These alloys consist of at least five elements in equiatomic distribution in the case of high entropy alloys (HEA) and three to four elements in equiatomic distribution in the case of medium entropy alloys (MEA). Previous studies on these alloys have focused primarily on their production, micro-structure and the resulting material properties. Meanwhile, the focus here is on the processing of the alloys and their influence on future applications. Up to now, there has been insufficient knowledge of the materials and processes involved in weld-ing. &#13;
In this work, therefore, the weldability of a CoCrFeMnNi-HEA and a CoCrNi-MEA by means of a TIG welding process was investigated as a basic system. To this end, the welding parameters were first determined on a reference alloy (Ni-based: 2.4858) and transferred to the welding of the CoCrFeMnNi-HEA and CoCrNi-MEA. Weldability was assessed by testing the absence of defects and microstructures obtained. The weld metal exhibited the dendritic microstructure typical of TIG, with microsegregations forming as interdendritic phases. Increased hardness was de-tected in the weld metal compared to the base metal. In the heat-affected zone, there was little grain growth and, in both alloys, the formation of hot cracks after welding. The cause of the cracks was to be found in the specimen preparation, which had an influence on the subsequent processing. After elimination of this in-fluence, no welding process-related imperfections were found in the CoCrFeMnNi-HEA and CoCrNi-MEA.&#13;
In summary, both materials show good fusion weldability by TIG welding. The re-sults of this work thus contribute to the understanding of the weldability of HEA and in particular for CoCrNi-MEA, which was considered in this depth for the first time.</abstract>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="RelatedIdentifier">https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/53643</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Marcel Giese</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>WIG-Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochentropielegierung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Mediumentropielegierung</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>52437</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A new approach towards performance-related design and scientific evaluation of joint sealing systems</title>
    <abstract language="eng">While there is a permanent improvement of concrete pavement mixtures and pavement construction types over the last decades, the state-of-the-art joint sealing materials and joint constructions seem to stagnate on an antiquated empirical level. This status has been reaffirmed in the latest European standard. &#13;
The consequences in the motorway network due to unsatisfying capability and durability of joint sealing systems are unacceptable. In addition, inadequate traffic performance (noise emissions, roll-over comfort) and traffic safety losses in the joint area of concrete pavements are existing challenges. These deficits and weaknesses reflect a demand for joint sealing materials and constructions whose approval requirements take functional aspects into account. Furthermore a sufficient analysis of decisive loads and a practice-oriented method to evaluate the requirements towards performance and durability is still missed. &#13;
In this contribution decisive loads to German highways are analyzed. The design of test specimen for representative functional testing of joint sealing systems is discussed. The focus is on the geometry of the test specimens and the used concrete mixture. Finally, a new approach for a function-orientated test concept that considers representative load functions is presented. The potential of this approach to validate the durability and capability of various joint sealing systems is also presented using an example.</abstract>
    <enrichment key="eventName">RILEM International Symposium on Bituminous Materials</enrichment>
    <enrichment key="eventPlace">Online Meeting</enrichment>
    <enrichment key="eventStart">14.12.2020</enrichment>
    <enrichment key="eventEnd">16.12.2020</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Janine Buchheim</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Joint sealing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Expansion joint</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Performance testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Capability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Durability</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.1 Baustoffe</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>62743</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Modern welding processes for optimising repair welds on high strength offshore steels</title>
    <abstract language="eng">The successful energy transition in Germany will require offshore wind turbines with outputs &gt;10 MW in the future. To achieve these high outputs, turbines far from coast are required with large subsea jacket structures (30 m up to 50 m) and tall towers (up to 200 m). High-strength steels with a yield strength up to 500 MPa and wall thicknesses up to 150 mm are increasingly being used for these structures. This plac-es high demands on welding manufacturing, especially for high-strength offshore steels. During the manu-facturing process detected defects by NDT require localized repair of welds by gouging and rewelding. Due to a lack of investigations, there are no repair concepts and information in standards and guidelines, par-ticularly for high-strength thick plate joints made of high-strength offshore steels. However, these are ur-gently needed to enable manufacturers, especially SMEs, to carry out safe and economical repairs. There-fore, BAM started the FOSTA project P1629 (IGF 01IF22746N) to investigate the stress-optimized repair (local gouging and welding) of high-strength thick plate joints made of offshore grades in the yield strength range off 355 to 460 MPa and similar weld metal with controlled high-performance GMAW pro-cesses and optimized narrow gouging grooves. The experimental analyses take into account the complex interaction of process, material, and design-related influences on the formation of weld induced stresses and the special microstructure of high-strength fine-grain structural steels. Welding-related material degra-dation and crack-critical residual tensile stresses need to be avoided to ensure high component safety and performance. A reduction in residual stress in the presence of high restraint conditions can be achieved by adapted heat control (if no disassembly measures are possible). The repair process involves manual thermal gouging, which allows the groove configuration to be modi-fied. Modern welding processes using high frequency arc control provide deep root penetration and focused energy input capable of welding narrow seams. A comparison was made between the traditional weld con-figuration with a wide 45° groove and transition arc welding and a narrow 30° groove with modern welding process. Even in the case of free shrinkage specimens, the narrow groove weld exhibits a significant reduc-tion of residual stresses, cf. Figure 1, especially in the HAZ and toward the adjacent base material. This can be attributed to the lower weld metal volume needed and the reduction of heat input per layer due to the controlled arc process. For the purposes of this comparison, the same weld seam build-up (but different number of layers) has been applied to both seam configurations. Note that in industrial application (manu-al welding), the wider groove would be welded with several off-center weld beads with conventional weld-ing process. In this analysis this would cause asymmetric effects regarding the residual stress state, diffi-cult to compare to each other. Component-related welding experiments on special testing equipment, adapted process and heat control concepts along with variable groove configurations will be developed and recommendations for guidelines elaborated. This is the prerequisite for fully utilizing the strength potential of high-strength steels and making a valuable contribution to the energy transition in Germany, especially for steel-processing SMEs.</abstract>
    <enrichment key="eventName">IIW Intermediate Meeting CII</enrichment>
    <enrichment key="eventPlace">Trollhättan, Sweden</enrichment>
    <enrichment key="eventStart">10.03.2025</enrichment>
    <enrichment key="eventEnd">12.03.2025</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Martin Hübner</author>
    <author>Levin Reichel</author>
    <author>Dirk Schröpfer</author>
    <author>Arne Kromm</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Repair welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Gouging</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Residual stress</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore wind turbines</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High-strength steels</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
  </doc>
  <doc>
    <id>54268</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Ultraschallunterstütztes Fräsen von Eisenaluminid</title>
    <abstract language="deu">Eisenaluminide eignen sich als Werkstoff für sicherheitsrelevante Komponenten welche hohen thermischen, mechanischen und korrosiven Belastungen ausgesetzt sind. Mit ihrer geringen Dichte und der kostengünstigen Verfügbarkeit der Legierungsbestandteile bieten sie ein hohes Marktpotenzial und eignen sich als Substitutionswerkstoff konventioneller Hochtemperaturwerkstoffe. Durch die Verwendung von Dauerformen im Kokillenguss lassen sich FeAl-Bauteile bereits äußerst wirtschaftlich herstellen. Das dabei entstehende komplexe, mehrphasige, sehr feinkörnige Gefüge mit harten Ausscheidungen und hohen Festigkeiten erschwert jedoch eine nachfolgende spanende Bearbeitung mit hohen Belastungen auf Werkzeug und Bauteiloberfläche. Um eine gesamtheitlich wirtschaftliche Herstellungsroute zu ermöglichen, sollen im Hinblick auf die erschwerte Zerspanbarkeit geeignete Werkzeuge und Fräsprozesse entwickelt werden. Durch die Verwendung des hybriden Bearbeitungsverfahrens des ultraschallunterstützten Fräsens können diese Ziele unter Einhaltung der hohen Anforderung an die Oberflächenintegrität sicherheitsrelevanter Bauteile erreicht werden.</abstract>
    <enrichment key="eventName">Bachelor-, Master-, Doktoranden-Kolloquium der Otto-von-Guericke Universität Magdeburg</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">01.12.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Julien Witte</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eisenaluminid</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Zerspanung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschallunterstütztes Fräsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Oberflächenintegrität</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>58859</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Herstellung beanspruchungsgerechter Oberflächen durch Kombination innovativer additiver und abtragender Fertigungsschritte an hochbelasteten Komponenten</title>
    <abstract language="deu">In vielen Anwendungen werden aufgrund zunehmender Anforderungen an den Widerstand gegenüber hohen, kombinierten mechanischen, tribologischen, thermischen und korrosiven Beanspruchungen Hochleistungsle¬gierungen eingesetzt. Den vielfach komplexen Bauteilstrukturen, herausfordernden Fertigungseigenschaften und der Erhöhung der Ressourceneffizienz lässt sich heute mit der additiven Fertigung (AM) begegnen, dem oftmals noch unzureichende Kenntnisse über die resultierende Homogenität und Anisotropie der speziellen Gefüge und den damit verbundenen Eigenschaften entgegensteht. Viele Anwendungen benötigen zudem definierte Oberflächen mit hohen Anforderungen an die Oberflächenintegrität, dem durch komplementären Einsatz von additiven und abtragenden Fertigungsschritten Rechnung getragen wird. Hochleistungslegierungen auf der Basis von Nickel oder Kobalt sind infolge der niedrigen Wärmeleitfähigkeit verbunden mit hoher Festigkeit und Zähigkeit äußerst herausfordernd mit Blick auf eine wirtschaftliche Zerspanung mit geometrisch bestimmter Schneide. Ein Vorhaben (IGF-Nr. 20.979 N/DVS-Nr. 1.3211) der BAM und TU Clausthal/ISAF befasst sich mit der Lösung dieser Problemstellung durch gezielte Beeinflussung des Gefüges mittels Modifikation der Schweißzusatzwerkstoffe und den Einsatz des ultraschallunterstützten Fräsens (US), bei gleichzeitiger Sicherstellung der geforderten Eigenschaften der untersuchten Werkstoffe. Es werden die Ergebnisse der Mikrostruktur und der Zerspanbarkeit der Modifikationen der MSG-Schweißung der FeNi36-Referenzlegierung mit 0,4 Gew.-% Zr und der Modifikationen der MSG-Schweißung der CoCr-Referenzlegierung mit 1 Gew.-% Zr sowie Hf vorgestellt. Abschließend werden aus den Ergebnissen Handlungsempfehlungen abgeleitet.</abstract>
    <enrichment key="eventName">Sitzung der Arbeitsgruppe (AG) V 12 „Additive Fertigung“</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">15.11.2023</enrichment>
    <enrichment key="eventEnd">15.11.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Lorenz Engelking</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Legierungsmodifikation</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschallunterstütztes Fräsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Additive Fertigung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Oberflächenintegrität</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>52674</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>1</pageFirst>
    <pageLast>7</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>176</volume>
    <type>conferenceobject</type>
    <publisherName>Deutsche Gesellschaft für Zerstörungsfreie Prüfung (DGZfP)</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Entwicklung einer Bohrlochsonde für Ultraschalluntersuchungen an Abschlussbauwerken in Endlagern</title>
    <abstract language="deu">Für die Qualitätssicherung von Abschlusswerken für Endlager wird eine Ultraschall-Bohrlochsonde entwickelt. Mithilfe dieser Sonde, die aus einer Vielzahl von einzelnen koppelmittelfreien Ultraschall-Punktkontaktprüfköpfen besteht, soll die Rissfreiheit der Versuchsbauwerke überprüft werden.&#13;
Ein erster Prototyp der Sonde wurde mit einem kommerziellen Ultraschallgerät betrieben und bestand aus 12 Transversalwellen-Punktkontaktprüfköpfen von denen jeweils sechs als Sender und sechs als Empfänger parallelgeschaltet waren. Um den erzeugten Schalldruck der Bohrlochsonde zu steigern, wurde bei der Neuentwicklung die Prüfkopfanzahl erhöht und zusätzlich die laufzeitgesteuerte Anregung der einzelnen Prüfköpfe vorgesehen. Für die Anregung der Prüfköpfe mit programmierten Zeitverzögerungen wurde ein neuartiger mehrkanaliger Sender für bipolare Rechtecksignale entwickelt.&#13;
Durch die Entwicklung der Bohrlochsonde soll eine dynamische Anpassung der Prüfkopf-Apertur sowie eine Fokussierung des Schallfeldes in Abhängigkeit der zu untersuchenden Tiefe erfolgen. Mithilfe entsprechender Anregungsfunktionen kann das Schallfeld der Bohrlochsonde unterschiedlich geformt werden, z. B. ist auch ein Schwenken des fokussierten Schallbündels möglich. Dadurch wird das erfasste Prüfvolumen begrenzt und auf diese Weise das Signal-Störverhältnis der Empfangssignale verbessert. In Kombination mit SAFT-Rekonstruktionsrechnungen wird durch eine optimierte Abstrahlcharakteristik der Sonde mit einem hohen Schalldruck unter verschiedenen Winkeln eine verbesserte Signalqualität und damit eine erhöhte Aussagesicherheit der Ergebnisse in der Objektabbildung erwartet.</abstract>
    <parentTitle language="deu">DGZfP-Berichtsband</parentTitle>
    <identifier type="urn">urn:nbn:de:kobv:b43-526746</identifier>
    <identifier type="isbn">978-3-947971-18-3</identifier>
    <identifier type="url">https://jahrestagung.dgzfp.de/portals/jt2021/bb176/inhalt/poster.htm</identifier>
    <enrichment key="eventName">DGZfP-Jahrestagung 2021</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">10.05.2021</enrichment>
    <enrichment key="eventEnd">11.05.2021</enrichment>
    <enrichment key="RelatedIdentifier">https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/52657</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Frank Mielentz</author>
    <author>Heiko Stolpe</author>
    <author>Ute Effner</author>
    <author>Matthias Behrens</author>
    <author>Thomas Bernstein</author>
    <author>Ernst Niederleithinger</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Abdichtbauwerk</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Bohrlochsonde</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschall-Echoverfahren</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Verschlussbauwerk</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Zerstörungsfreie Prüfung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschall-Messtechnik</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.2 Zerstörungsfreie Prüfmethoden für das Bauwesen</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="themenfelder" number="">Kerntechnische Entsorgung</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/52674/P50.pdf</file>
  </doc>
  <doc>
    <id>62356</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>11</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Walter de Gruyter GmbH</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Energy efficiency in materials testing by reactive power part 2: resonance method in fatigue testing</title>
    <abstract language="eng">Reactive power is related to the type of power that does not consume energy but stores it. In the design of test machines, the utilization of this physical phenomenon would be very beneficial. Reactive power allows for the combination of power amplification with energy savings, making it an ideal principle for conducting long-term tests that involve high loads and prolonged energy consumption. This work focuses on testing machines operating in resonance, which allows for higher test frequencies and reduced test durations. Various types of fatigue testing machines, including those with rotating-unbalance actuators, servo-hydraulic actuators, and piezoelectric actuators, are examined through vibration analysis, methodical design, and mechatronics. Resonant testing machines provide significant advantages in energy efficiency and test accuracy for a wide range of applications in materials testing. These methods are crucial for future applications in industries where energy efficiency and precise fatigue testing are critical, such as aerospace, automotive, and civil engineering.</abstract>
    <parentTitle language="eng">Materials Testing</parentTitle>
    <identifier type="doi">10.1515/mt-2024-0350</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="opus_import_data">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,12,20]],"date-time":"2024-12-20T18:10:13Z","timestamp":1734718213655,"version":"3.32.0"},"reference-count":27,"publisher":"Walter de Gruyter GmbH","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"&lt;jats:title&gt;Abstract&lt;\/jats:title&gt;\n               &lt;jats:p&gt;Reactive power is related to the type of power that does not consume energy but stores it. In the design of test machines, the utilization of this physical phenomenon would be very beneficial. Reactive power allows for the combination of power amplification with energy savings, making it an ideal principle for conducting long-term tests that involve high loads and prolonged energy consumption. This work focuses on testing machines operating in resonance, which allows for higher test frequencies and reduced test durations. Various types of fatigue testing machines, including those with rotating-unbalance actuators, servo-hydraulic actuators, and piezoelectric actuators, are examined through vibration analysis, methodical design, and mechatronics. Resonant testing machines provide significant advantages in energy efficiency and test accuracy for a wide range of applications in materials testing. These methods are crucial for future applications in industries where energy efficiency and precise fatigue testing are critical, such as aerospace, automotive, and civil engineering.&lt;\/jats:p&gt;","DOI":"10.1515\/mt-2024-0350","type":"journal-article","created":{"date-parts":[[2024,12,20]],"date-time":"2024-12-20T16:56:27Z","timestamp":1734713787000},"source":"Crossref","is-referenced-by-count":0,"title":["Energy efficiency in materials testing by reactive power part 2: resonance method in fatigue testing"],"prefix":"10.1515","author":[{"given":"Dietmar","family":"Findeisen","sequence":"first","affiliation":[{"name":"Berlin , Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2226-9337","authenticated-orcid":false,"given":"Dirk","family":"Schr\u00f6pfer","sequence":"additional","affiliation":[{"name":"42220 Bundesanstalt f\u00fcr Materialforschung und -pr\u00fcfung (BAM), Berlin , Germany"}]}],"member":"374","published-online":{"date-parts":[[2024,12,23]]},"reference":[{"key":"2024122017464650570_j_mt-2024-0350_ref_001","unstructured":"W. Sch\u00fctz, A History of Fatigue, vol. 04, 1st ed. Berlin, DVM-Special Publication, 2000."},{"key":"2024122017464650570_j_mt-2024-0350_ref_002","unstructured":"ISO 1099, Metallic Materials\u00a0\u2013 Fatigue Testing\u00a0\u2013 Axial Force-Controlled Method, 2017 [Online]. Available at: https:\/\/www.dinmedia.de\/de\/norm\/iso-1099\/275310018."},{"key":"2024122017464650570_j_mt-2024-0350_ref_003","unstructured":"DIN EN ISO 7500-1 Supplement 3, Metallic Materials \u2013 Calibration and Verification of Static Uniaxial Testing Machines \u2013 Part 1: Tension\/Compression Testing Machines \u2013 Calibration and Verification of the Force-Measuring System \u2013 Supplement 3: General Information for Requirements, Verification and Calibration of Fatigue Testing Machines, [Draft], Berlin, Beuth, 2023."},{"key":"2024122017464650570_j_mt-2024-0350_ref_004","doi-asserted-by":"crossref","unstructured":"J.\u00a0M. E. Marques, D. Benasciutti, A. Nies\u0142ony, and J. Slavi\u010d, \u201cAn overview of fatigue testing systems for metals under uniaxial and multiaxial random loadings,\u201d Metals, vol.\u00a011, no.\u00a03, 2021, Art. no. 447, https:\/\/doi.org\/10.3390\/met11030447.","DOI":"10.3390\/met11030447"},{"key":"2024122017464650570_j_mt-2024-0350_ref_005","doi-asserted-by":"crossref","unstructured":"P. Costa, et al.., \u201cReview of multiaxial testing for very high cycle fatigue, from \u2018conventional\u2019 to ultrasonic machines,\u201d Machines, vol.\u00a08, no.\u00a02, p.\u00a025, 2020, https:\/\/doi.org\/10.3390\/machines8020025.","DOI":"10.3390\/machines8020025"},{"key":"2024122017464650570_j_mt-2024-0350_ref_006","unstructured":"D. Findeisen and K. Federn, \u201cKonstruktive L\u00f6sungsvarianten von Schwingantrieben; Anwendungsbeispiel Schwingpr\u00fcfmaschine, Teil 1,\u201d Konstruktion, vol.\u00a030, no.\u00a01, pp.\u00a01\u20139, 1978."},{"key":"2024122017464650570_j_mt-2024-0350_ref_007","unstructured":"D. Findeisen, Ger\u00e4tetechnische Verwirklichung von Schwingpr\u00fcfmaschinen, Zwanglaufantriebe, Habilitation, Germany, Department of Design and Manufacturing, Technical University Berlin, Fortschritt-Bericht VDI-Z, ser. 01, no. 116, VDI-Verlag, 1984."},{"key":"2024122017464650570_j_mt-2024-0350_ref_008","doi-asserted-by":"crossref","unstructured":"F. Klinger and H. Henke, \u201c20-MN universal testing machine. Principle of construction and examples of applications,\u201d Mater. Test., vol.\u00a032, nos. 7\/8, pp.\u00a0632\u2013648, 1990, https:\/\/doi.org\/10.1515\/mt-1990-327-806.","DOI":"10.1515\/mt-1990-327-806"},{"key":"2024122017464650570_j_mt-2024-0350_ref_009","unstructured":"F. Klinger, \u00dcbertragungsverhalten der Steuerkette Servoventil-Zylinder-Belastung unter besonderer Ber\u00fccksichtigung des Resonanzbetriebs, Ph.D. dissertation, IFAS\u00a0\u2013 Department of Fluid Drives and Systems, University of Aachen (RWTH), Aachen, Germany, 1977."},{"key":"2024122017464650570_j_mt-2024-0350_ref_010","doi-asserted-by":"crossref","unstructured":"J. Zhao, J. Wan, S. Zhang, C. Yan, and H. Zhao, \u201cApplication of ultrasonic fatigue technology in very-high-cycle fatigue testing of aviation gas turbine engine blade materials: a review,\u201d Sci. China: Technol. Sci., vol. 67, no. 5, pp. 1317\u20131363, 2024. https:\/\/doi.org\/10.1007\/s11431-023-2556-1.","DOI":"10.1007\/s11431-023-2556-1"},{"key":"2024122017464650570_j_mt-2024-0350_ref_011","unstructured":"M. Russenberger, \u201cEine neue Erm\u00fcdungspr\u00fcfmaschine nach dem Vollresonanzbetrieb,\u201d Schweiz. Arch., no.\u00a07, pp.\u00a01\u20137, 1971."},{"key":"2024122017464650570_j_mt-2024-0350_ref_012","doi-asserted-by":"crossref","unstructured":"C. Bathias and P. C. Paris, Gigacycle Fatigue in Mechanical Practice, Boca Raton, CRC Press, 2004.","DOI":"10.1201\/9780203020609"},{"key":"2024122017464650570_j_mt-2024-0350_ref_013","unstructured":"ISO 2041, Mechanical Vibration, Shock and Condition Monitoring\u00a0\u2013 Vocabulary, 2018 [Online]. Available at: https:\/\/www.dinmedia.de\/de\/norm\/iso-2041\/297402238."},{"key":"2024122017464650570_j_mt-2024-0350_ref_014","unstructured":"K. Federn, Elektrisch-mechanische Analogien in erweiterter Form und ihre Anwendung auf elementare Schwingungsrechnungen, vol. 35, D\u00fcsseldorf, VDI-Berichte, 1959, pp. 33\u201354."},{"key":"2024122017464650570_j_mt-2024-0350_ref_015","unstructured":"ISO 7626-1, Mechanical Vibration and Shock\u00a0\u2013 Experimental Determination of Mechanical Mobility\u00a0\u2013 Part 1: Basic Terms and Definitions, and Transducer Specifications, 2011 [Online]. Available at: https:\/\/www.dinmedia.de\/de\/norm\/iso-7626-1\/144559009."},{"key":"2024122017464650570_j_mt-2024-0350_ref_016","unstructured":"VDI 3830-5, Damping of Materials and Members\u00a0\u2013 Experimental Techniques for the Determination of Damping Characteristics, 2005 [Online]. Available at: https:\/\/www.dinmedia.de\/de\/technische-regel\/vdi-3830-blatt-5\/80074922."},{"key":"2024122017464650570_j_mt-2024-0350_ref_017","unstructured":"D. Findeisen, Dynamisches System Schwingpr\u00fcfmaschine, Ph.D. dissertation, Department of Design and Manufacturing, Technical University Berlin, Fortschritt-Bericht VDI-Z., ser. 11, no.18, VDI-Verlag, Germany, 1974."},{"key":"2024122017464650570_j_mt-2024-0350_ref_018","unstructured":"D. Findeisen, \u201cRechnerische Aussagen in der Kozeptphase \u00fcber das dynamische Verhalten, Anwendungsbeispiel Schwingpr\u00fcfmaschine,\u201d Konstruktion, vol.\u00a027, no.\u00a06, pp.\u00a0223\u2013232, 1975."},{"key":"2024122017464650570_j_mt-2024-0350_ref_019","doi-asserted-by":"crossref","unstructured":"D. Findeisen, System Dynamics and Mechanical Vibrations, an Introduction, Berlin, Germany, Springer, 2000.","DOI":"10.1007\/978-3-662-04205-2"},{"key":"2024122017464650570_j_mt-2024-0350_ref_020","unstructured":"IEC 80000-6, Quantities and Units\u00a0\u2013 Part 6: Electromagnetism, 2022 [Online]. Available at: https:\/\/www.dinmedia.de\/de\/norm\/iec-80000-6\/361765722."},{"key":"2024122017464650570_j_mt-2024-0350_ref_021","unstructured":"K. Roth and R. Simonek, \u201cMechanische verst\u00e4rker,\u201d Konstruktion, vol.\u00a023, no.\u00a03, pp.\u00a090\u201398, 1971."},{"key":"2024122017464650570_j_mt-2024-0350_ref_022","doi-asserted-by":"crossref","unstructured":"D. Findeisen, H. Hei\u00dfner, and A. Achelp\u00f6ler, \u201cUpcycling of resonance fatigue testing machines,\u201d Mater. Test., vol.\u00a039, nos. 11\/12, pp.\u00a0446\u2013448, 1997, https:\/\/doi.org\/10.1515\/mt-1997-3911-1204.","DOI":"10.1515\/mt-1997-3911-1204"},{"key":"2024122017464650570_j_mt-2024-0350_ref_023","doi-asserted-by":"crossref","unstructured":"F. W. Neikes and D. Sch\u00f6ne, \u201cDynamical Testing of Large Components becomes simpler and more efficient,\u201d Mater. Test., vol.\u00a038, no.\u00a010, pp.\u00a0445\u2013450, 1996, https:\/\/doi.org\/10.1515\/mt-1996-381017.","DOI":"10.1515\/mt-1996-381017"},{"key":"2024122017464650570_j_mt-2024-0350_ref_024","unstructured":"ISO 12110-1, Metallic Materials\u00a0\u2013 Fatigue Testing\u00a0\u2013 Variable Amplitude Fatigue Testing\u00a0\u2013 Part 1: General Principles, Test Method and Reporting Requirements, 2013 [Online]. Available at: https:\/\/www.dinmedia.de\/en\/standard\/iso-12110-1\/190679279."},{"key":"2024122017464650570_j_mt-2024-0350_ref_025","unstructured":"A. Friedmann, M. Lilov, T. Melz, T. Bein, and H. Hanselka, Verbundprojekt: Hybride Hochfrequenzpr\u00fcftechnik zur kosteng\u00fcnstigen, schnellen Werkstoff- und Bauteilpr\u00fcfung\u00a0\u2013 hyHPT, Fraunhofer LBF et\u00a0al., Darmstadt, Germany, Final Rep. Nr. 260231, 2010. Available at: https:\/\/edocs.tib.eu\/files\/e01fb11\/654227535.pdf."},{"key":"2024122017464650570_j_mt-2024-0350_ref_026","unstructured":"T. Dr\u00f6gem\u00fcller, H. Atzrodt, C. Axt, A. Friedmann, M. Lilov, and T. Melz, \u201cHybrid high cycle variable amplitude fatigue testing machine,\u201d in Second International Conference on Material and Component Performance under Variable Amplitude Loading 2009. Proceedings. vol. 2 of DVM, Darmstadt, Germany, 2009."},{"key":"2024122017464650570_j_mt-2024-0350_ref_027","doi-asserted-by":"crossref","unstructured":"R. Wagener, T. Melz, C. Fischer, M. Matthias, and H. Kaufmann, \u201cNew experimental methods for investigating variable amplitude loading effects in HCF and VHCF regimes,\u201d Materialwiss. Werkstofftech., vol.\u00a042, no.\u00a010, pp.\u00a0929\u2013933, 2011, https:\/\/doi.org\/10.1002\/mawe.201100866.","DOI":"10.1002\/mawe.201100866"}],"container-title":["Materials Testing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/mt-2024-0350\/xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/mt-2024-0350\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,12,20]],"date-time":"2024-12-20T17:47:01Z","timestamp":1734716821000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/mt-2024-0350\/html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,12,23]]},"references-count":27,"alternative-id":["10.1515\/mt-2024-0350"],"URL":"https:\/\/doi.org\/10.1515\/mt-2024-0350","relation":{},"ISSN":["0025-5300","2195-8572"],"issn-type":[{"value":"0025-5300","type":"print"},{"value":"2195-8572","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,12,23]]}}}</enrichment>
    <enrichment key="local_crossrefDocumentType">journal-article</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">06.01.2025</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Dietmar Findeisen</author>
    <author>Dirk Schröpfer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Reactive power</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Amplitude magnification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Power amplification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fatigue testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Resonant test machines</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
  </doc>
  <doc>
    <id>62355</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>189</pageFirst>
    <pageLast>197</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>67</volume>
    <type>article</type>
    <publisherName>Walter de Gruyter GmbH</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Energy efficiency in materials testing by reactive power – part 1: power recirculating method in wear testing</title>
    <abstract language="eng">Reactive power is related to the type of power that does not consume energy but stores it. In the design of test machines, the utilization of this physical phenomenon would be very beneficial. Reactive power allows for the combination of power amplification with energy savings, making it an ideal principle for conducting long-term tests that involve high loads and prolonged energy consumption. This concept is illustrated in this work focusing test machines used in rotary testing procedures. Drive element pairs, which serve as component test objects, are primarily exposed to wear stress. These stressed element pairs are consequently integral parts of a tribological system. The underlying principles of power amplification and power feedback are explained from the perspectives of drive technology, systematic design, methodical design, and mechatronics.</abstract>
    <parentTitle language="eng">Materials Testing</parentTitle>
    <identifier type="doi">10.1515/mt-2023-0136</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="opus_import_data">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,12,25]],"date-time":"2024-12-25T05:16:51Z","timestamp":1735103811823,"version":"3.32.0"},"reference-count":33,"publisher":"Walter de Gruyter GmbH","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,1,29]]},"abstract":"&lt;jats:title&gt;Abstract&lt;\/jats:title&gt;\n               &lt;jats:p&gt;Reactive power is related to the type of power that does not consume energy but stores it. In the design of test machines, the utilization of this physical phenomenon would be very beneficial. Reactive power allows for the combination of power amplification with energy savings, making it an ideal principle for conducting long-term tests that involve high loads and prolonged energy consumption. This concept is illustrated in this work focusing test machines used in rotary testing procedures. Drive element pairs, which serve as component test objects, are primarily exposed to wear stress. These stressed element pairs are consequently integral parts of a tribological system. The underlying principles of power amplification and power feedback are explained from the perspectives of drive technology, systematic design, methodical design, and mechatronics.&lt;\/jats:p&gt;","DOI":"10.1515\/mt-2023-0136","type":"journal-article","created":{"date-parts":[[2024,12,14]],"date-time":"2024-12-14T06:50:42Z","timestamp":1734159042000},"page":"189-197","source":"Crossref","is-referenced-by-count":0,"title":["Energy efficiency in materials testing by reactive power \u2013 part 1: power recirculating method in wear testing"],"prefix":"10.1515","volume":"67","author":[{"given":"Dietmar","family":"Findeisen","sequence":"first","affiliation":[{"name":"Berlin , Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2226-9337","authenticated-orcid":false,"given":"Dirk","family":"Schr\u00f6pfer","sequence":"additional","affiliation":[{"name":"42220 Bundesanstalt f\u00fcr Materialforschung und -pr\u00fcfung (BAM) , Berlin , Germany"}]}],"member":"374","published-online":{"date-parts":[[2024,12,16]]},"reference":[{"key":"2024122407261068473_j_mt-2023-0136_ref_001","unstructured":"Technical Principles of mechanisms\u00a0\u2013 Terminology of mechanisms, VDI 2127, 1993 [Online]. Available at: https:\/\/www.dinmedia.de\/de\/technische-regel\/vdi-2127\/954759."},{"key":"2024122407261068473_j_mt-2023-0136_ref_002","doi-asserted-by":"crossref","unstructured":"G. Niemann and H. Winter, Maschinenelemente\u00a0\u2013 Band 2: Getriebe allgemein, Zahnradgetriebe\u00a0\u2013 Grundlagen, Stirnradgetriebe, Berlin, Germany, Springer, 2003.","DOI":"10.1007\/978-3-662-11873-3_2"},{"key":"2024122407261068473_j_mt-2023-0136_ref_003","doi-asserted-by":"crossref","unstructured":"H. Czichos and K.-H. Habig, Tribologie-Handbuch\u00a0\u2013 Tribometrie, Tribomaterialien, Tribotechnik, Berlin, Germany, Springer, 2020.","DOI":"10.1007\/978-3-658-29484-7"},{"key":"2024122407261068473_j_mt-2023-0136_ref_004","doi-asserted-by":"crossref","unstructured":"H. Czichos, \u201cTribologie\u00a0\u2013 50 Jahre interdisziplin\u00e4re Reibungs- und Verschlei\u00dfforschung,\u201d Mater. Test., vol.\u00a058, nos. 11\u201312, pp.\u00a0921\u2013926, 2016, https:\/\/doi.org\/10.3139\/120.110943.","DOI":"10.3139\/120.110943"},{"key":"2024122407261068473_j_mt-2023-0136_ref_005","unstructured":"Gears\u00a0\u2013 Wear and Damage to Gear Teeth\u00a0\u2013 Part 1: Nomenclature and Characteristics, ISO 10825-1, May 2022 [Online]. Available at: https:\/\/www.dinmedia.de\/de\/norm\/iso-10825-1\/355735018."},{"key":"2024122407261068473_j_mt-2023-0136_ref_006","unstructured":"G. Niemann and H. Rettig, \u201cDer FZG-Zahnrad-Kurztest zur Pr\u00fcfung von Getriebe\u00f6len,\u201d Erd\u00f6l und Kohle, vol.\u00a007, no.\u00a010, pp.\u00a0640\u2013642, 1954."},{"key":"2024122407261068473_j_mt-2023-0136_ref_007","unstructured":"H. Winter, K. Michaelis, Fresstragf\u00e4higkeit von Stirnradgetrieben, Antriebstechnik, vol. 14, Part 1: no. 07, pp. 405\u00a0\u2013 409 \/Part 2: no. 08, pp. 461\u00a0\u2013 465, 1975."},{"key":"2024122407261068473_j_mt-2023-0136_ref_008","unstructured":"B.R. H\u00f6hn, P. Oster, K. Michaelis, Zahnfu\u00df-betriebsfestigkeitsuntersuchungen\u00a0an einsatzgeh\u00e4rteten zahnr\u00e4dern, Antriebstechnik, vol. 40, Part 1: no. 08, pp. 37\u00a0\u2013 39 \/Part 2: no. 09, pp. 65\u00a0\u2013 69, 2001."},{"key":"2024122407261068473_j_mt-2023-0136_ref_009","doi-asserted-by":"crossref","unstructured":"A. Sitzmann, Th. Tobie, K. Stahl, and S. Schurer, \u201cInfluence of the case properties after nitriding on the load carrying capacity of highly loaded gears,\u201din ASME 2019 International Power Transmission and Gearing Conference, Proceedings, Anaheim, CA, USA, 2019, pp.\u00a01\u20139.","DOI":"10.1115\/DETC2019-97405"},{"key":"2024122407261068473_j_mt-2023-0136_ref_010","unstructured":"Gears\u00a0\u2013 FZG Test Procedures\u00a0\u2013 Part 1: FZG Test Method A\/8,3\/90 for Relative Scuffing Load-Carrying Capacity of Oils, 2006 ISO 14635-1 [Online]. Available at: https:\/\/www.din.de\/de\/mitwirken\/normenausschuesse\/nam\/veroeffentlichungen\/wdc-beuth:din21:87430709."},{"key":"2024122407261068473_j_mt-2023-0136_ref_011","unstructured":"Planetary gear drives \u2013 definitions, symbols, designs, calculations, 2012 VDI 2157 [Online]. Available at: https:\/\/www.din.de\/de\/wdc-beuth:din21:138169923."},{"key":"2024122407261068473_j_mt-2023-0136_ref_012","doi-asserted-by":"crossref","unstructured":"H. W. M\u00fcller, Die Umlaufgetriebe: Auslegung und vielseitige Anwendungen, Berlin, Germany, Springer, 1998.","DOI":"10.1007\/978-3-642-58725-2"},{"key":"2024122407261068473_j_mt-2023-0136_ref_013","doi-asserted-by":"crossref","unstructured":"B. Bender, and K. Gericke, Eds., Pahl\/Beitz Konstruktionslehre, 9th ed. Berlin, Germany, Springer, 2020.","DOI":"10.1007\/978-3-662-57303-7"},{"key":"2024122407261068473_j_mt-2023-0136_ref_014","unstructured":"K. Roth and R. Simonek, \u201cMechanische verst\u00e4rker,\u201d Konstruktion, vol.\u00a023, no.\u00a03, pp.\u00a090\u201398, 1971."},{"key":"2024122407261068473_j_mt-2023-0136_ref_015","doi-asserted-by":"crossref","unstructured":"K. Roth, Konstruieren mit Konstruktionskatalogen\u00a0\u2013 Band 2: Kataloge, Berlin, Germany, Springer, 2000.","DOI":"10.1007\/978-3-642-17466-7"},{"key":"2024122407261068473_j_mt-2023-0136_ref_016","unstructured":"Design Methodology for Mechatronic Systems, VDI 2206, June 2004 [Online]. Available at: https:\/\/www.dinmedia.de\/de\/technische-regel\/vdi-2206\/73296956."},{"key":"2024122407261068473_j_mt-2023-0136_ref_017","unstructured":"R. Isermann, Mechatronische Systeme\u00a0\u2013 Grundlagen, 2nd ed., Berlin, Germany, Springer, 2007."},{"key":"2024122407261068473_j_mt-2023-0136_ref_018","unstructured":"S. Rinderknecht, R. Nordmann, and H. Birkhofer, Einf\u00fchrung in die Mechatronik f\u00fcr den Maschinenbau, 2nd ed., Shaker, Ed., Aachen, Germany, 2018."},{"key":"2024122407261068473_j_mt-2023-0136_ref_019","unstructured":"L. Zhihong, H. Ping, and S. Rinderknecht, \u201cA combined theoretical and experimental Investigation of the overall energy consumption in a wet dual clutch system during a driving profile,\u201dASME 2021 International Mechanical Engineering Congress and Exposition, Proceedings, 2021, pp.\u00a01\u20139. online."},{"key":"2024122407261068473_j_mt-2023-0136_ref_020","unstructured":"Fluid Power Systems and Components\u00a0\u2013 Graphic Symbols and Circuit Diagrams\u00a0\u2013 Part 1: Graphic Symbols for Conventional use and Data-Processing Applications, ISO 1219-1, June 2016 [Online]. Available at: https:\/\/www.din.de\/de\/mitwirken\/normenausschuesse\/nam\/veroeffentlichungen\/wdc-beuth:din21:297840234."},{"key":"2024122407261068473_j_mt-2023-0136_ref_021","unstructured":"K. V. Schaller, Betriebsfestigkeitsuntersuchungen zur Gr\u00fcbchenbildung an einsatzgeh\u00e4rteten Stirnflanken, Ph.D. dissertation, FZG\u00a0\u2013 Department of Design Components, Technical University of Munich (TUM), Munich, Germany, 1990."},{"key":"2024122407261068473_j_mt-2023-0136_ref_022","unstructured":"C. Ebersp\u00e4cher, Reihenfolgeeffekte bei der Gr\u00fcbchen-Betriebsfestigkeit einsatzgeh\u00e4rteter Zahnr\u00e4der, Ph.D. dissertation, FZG\u00a0\u2013 Department of Design Components, Technical University of Munich (TUM), Munich, Germany, 1995."},{"key":"2024122407261068473_j_mt-2023-0136_ref_023","unstructured":"C. Lohmann, Zusammenhang von Erm\u00fcdung, Rissbildung, Verschlei\u00df und Graufleckentragf\u00e4higkeit an Stirnr\u00e4dern, Ph.D. dissertation, Chair of Industrial and Automotive Drivetrains (LIFA), Ruhr-University Bochum (RUB), Bochum, Germany, 2016."},{"key":"2024122407261068473_j_mt-2023-0136_ref_024","doi-asserted-by":"crossref","unstructured":"A. Kretschmer, \u201cEine Leistungspr\u00fcfanlage f\u00fcr Triebelemente,\u201d Mater. Test., vol.\u00a001, no.\u00a004, pp.\u00a0132\u2013141, 1959, https:\/\/doi.org\/10.1515\/mt-1959-010402.","DOI":"10.1515\/mt-1959-010402"},{"key":"2024122407261068473_j_mt-2023-0136_ref_025","unstructured":"K.-H. Bu\u00dfmann, H. L\u00f6sche, Winkelmessungen an gummi-keilriemen, Kautschuk und Gummi, vol. 11, Part 1: no. 10, pp. 238\u00a0\u2013 242 \/Part 2: no. 11, pp. 266\u00a0\u2013 276, 1958."},{"key":"2024122407261068473_j_mt-2023-0136_ref_026","unstructured":"P. Schrimmer and H. L\u00f6sche, \u201cTreibriemen, Riementriebe und\u00a0Treibriemenpr\u00fcfung,\u201d Klepzig Fachberichte, vol.\u00a072, no.\u00a001, pp.\u00a04\u201312, 1964."},{"key":"2024122407261068473_j_mt-2023-0136_ref_027","unstructured":"P. Schrimmer, \u201cProfilverformung und Betriebsverhalten von Keilriemen,\u201d Ph.D. dissertation, Department of mechanical and electrical engineering, Technical University Brunswick, Brunswick, Germany, 1971."},{"key":"2024122407261068473_j_mt-2023-0136_ref_028","unstructured":"E. Jarchow, K. Langenbeck, H. Benthake, \u201cPlaneten- und \u00dcberlagerungsgetriebe,\u201d Antriebstechnik, vol. 06, Part 1: no. 11, pp. 402\u00a0\u2013 406 \/Part 2: no. 12, pp. 432\u00a0\u2013 440, 1967."},{"key":"2024122407261068473_j_mt-2023-0136_ref_029","unstructured":"E. Jarchow, \u201cStufenlose hydrostatische Umlauf- und Koppelgetriebe,\u201d VDI-Berichte, vol.\u00a0167, pp.\u00a05\u201320, 1971."},{"key":"2024122407261068473_j_mt-2023-0136_ref_030","unstructured":"D. Findeisen, \u201cGleichf\u00f6rmig \u00fcbersetzende Getriebe stufenloser \u00dcbersetzungs\u00e4nderung, Gegen\u00fcberstellung von mechanischer und fluidtechnischer Energie\u00fcbertragung,\u201d Part 2, Konstruktion, vol.\u00a033, no.\u00a001, pp.\u00a015\u201324, 1981."},{"key":"2024122407261068473_j_mt-2023-0136_ref_031","unstructured":"S. Helduser, Grundlagen elektrohydraulischer Antriebe und Steuerungen, Mainz, Germany, Vereinigte Fachverlage, 2013."},{"key":"2024122407261068473_j_mt-2023-0136_ref_032","doi-asserted-by":"crossref","unstructured":"D. Findeisen and S. Helduser, \u00d6lhydraulik\u00a0\u2013 Handbuch der hydraulischen Antriebe und Steuerungen, 6th ed., Berlin, Germany, Springer, 2015.","DOI":"10.1007\/978-3-642-54909-0"},{"key":"2024122407261068473_j_mt-2023-0136_ref_033","doi-asserted-by":"crossref","unstructured":"D. Findeisen, Durchf\u00fchrung des Pr\u00fcfverfahrens Schwingfestigkeitsversuch\u00a0\u2013 Anforderungen an die Schwingpr\u00fcfmaschine aus systemtheoretischer Sicht, Teil 1 und 2, Mater. Test., vol.\u00a017, no.\u00a04, pp.\u00a096\u2013104, https:\/\/doi.org\/10.1515\/mt-1975-170204.","DOI":"10.1515\/mt-1975-170405"}],"container-title":["Materials Testing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/mt-2023-0136\/xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/mt-2023-0136\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,12,24]],"date-time":"2024-12-24T07:29:44Z","timestamp":1735025384000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/mt-2023-0136\/html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,12,16]]},"references-count":33,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2024,12,6]]},"published-print":{"date-parts":[[2025,1,29]]}},"alternative-id":["10.1515\/mt-2023-0136"],"URL":"https:\/\/doi.org\/10.1515\/mt-2023-0136","relation":{},"ISSN":["0025-5300","2195-8572"],"issn-type":[{"type":"print","value":"0025-5300"},{"type":"electronic","value":"2195-8572"}],"subject":[],"published":{"date-parts":[[2024,12,16]]}}}</enrichment>
    <enrichment key="local_crossrefDocumentType">journal-article</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">06.01.2025</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Dietmar Findeisen</author>
    <author>Dirk Schröpfer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Reactive power</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Power amplification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Power feedback</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wear testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Strained element pairs</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
  </doc>
  <doc>
    <id>55445</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>879</pageFirst>
    <pageLast>884</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>108</volume>
    <type>article</type>
    <publisherName>Elsevier B.V.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Ultrasonic assisted milling of a CoCrFeNi medium entropy alloy</title>
    <abstract language="eng">Medium and High Entropy Alloys (MEA/HEA) are recently developed material classes, providing manifold applications, e.g., due to extraordinary structural properties. In that connection, the machinability as important issue for the processing of these materials was not in the scientific focus. This study focusses on experimental analysis of milling process conditions including ultrasonic assisted milling (USAM) and their effects on the resulting surface integrity of equiatomic CoCrFeNi-MEA specimens. For that reason, milling parameters (cutting speed, feed per cutting edge) were systematically varied for both conventional milling and USAM. The surface integrity was analyzed in terms of topography, defects, and residual stresses. Especially USAM leads to a decrease of occurring cutting forces and, hence, to an improvement of the surface integrity. Beneficial effects were observed in terms of lower tensile residual stresses at high cutting speed and feed per cutting edge.</abstract>
    <parentTitle language="eng">Procedia CIRP</parentTitle>
    <identifier type="doi">10.1016/j.procir.2022.05.203</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-554458</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Tim Richter</author>
    <author>Diego Delgado Arroyo</author>
    <author>Andreas Börner</author>
    <author>Dirk Schröpfer</author>
    <author>Michael Rhode</author>
    <author>T. Lindner</author>
    <author>M. Löbel</author>
    <author>B. Preuß</author>
    <author>T. Lampke</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Medium entropy alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic Assisted Machining</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surface Integrity</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/55445/PROCEDIA CIRP_Ultrasonic assisted milling of a CoCrFeNi medium entropy alloy.pdf</file>
  </doc>
  <doc>
    <id>56670</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Modification of Co Cr alloys to optimize of additively welded microstructures and subsequent surface finishing</title>
    <abstract language="eng">Cobalt chromium alloys are often used in turbine and plant construction. This is based on their high thermal and mechanical stress resistance as well as their high wear resistance to corrosive and abrasive loads. However, cobalt is a cost-intensive material that is difficult to machine. Moreover, increasingly complex structures and the optimisation of resource efficiency also require additive manufacturing steps for the production or repair of components in many sectors. Concerning inhomogeneity&#13;
and anisotropy of the microstructure and properties as well as manufacturing-related stresses, a lot of knowledge is still necessary for the economic use of additive welding processes in SMEs. As a result of the high stresses on the components and requirements for a high surface quality, a complementary use of additive and machining manufacturing processes is necessary. Thereby, Co–Cr alloys are extremely challenging for machining with geometrically defined cutting edges because of their low thermal conductivity combined with high strength and toughness. An approach to solve this problem is to refine and homogenise the microstructure. This is achieved by modifying the alloy with elements zirconium and hafnium, which are added up to a maximum of 1 wt.-%. A reduction of the process forces and stresses on the tool and work piece surface is also achievable via hybrid milling processes. There are already studies on the combined use of additive and machining manufacturing processes based on laser technology. However, knowledge based on powder and wire-based arc processes is&#13;
important, as these processes are more widespread. Furthermore, the effects on the surface zone of additively manufactured components by hybrid finish milling have not yet been a subject of research. The results show that the structural morphology could be significantly influenced with the addition of zirconium and hafnium.</abstract>
    <enrichment key="eventName">74th IIW Annual Assembly</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">12.07.2021</enrichment>
    <enrichment key="eventEnd">17.07.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>A. Eissel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Modification of structural morphology</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Co–Cr-alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Plasma-transferred arc welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic-assisted milling</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>56704</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Innovative Multielement-Legierungen: Ergebnisse zur Schweißbarkeit und Anwendungseigenschaften</title>
    <abstract language="deu">Multielement-Legierungen (MPEA – multiple pricipal element alloys) stellen eine neue Klasse von Werkstoffen dar, die aus mindestens drei äquiatomaren Legierungselementen mit jeweils einem Gehalt von 5–35 Atom-% bestehen. Somit unterscheidet sich das Legierungskonzept fundamental von konventionellen bspw. Stahl- oder Al-basierten Legierungen. In jüngster Zeit lag der Schwerpunkt auf dem Legierungs-Design der MPEA und der Überprüfung bzw. Erreichung der gewünschten Eigenschaften bzw. -kombinationen. Hierzu werden die Legierungselemente gezielt ausgewählt und die Mikrostrukturen ein- und zum Teil auch mehrphasig eingestellt. Ziel sind hochinnovative MPEA mit angepassten Eigenschaften für die industrielle Anwendung. Dabei sollen insbesondere die bei konventionellen Legierungen wesentlichen Zielkonflikte, wie bspw. der Trade-off zwischen Festigkeit und Duktilität, überwunden werden. Darüber hinaus sind mechanische Eigenschaften bei sehr hohen sowie kryogenen Temperaturen bei gleichzeitig höchster Korrosionsbeständigkeit von hohem Interesse. Die Herstellung von Bauteilen erfordert dazu werkstoff- und beanspruchungsgerechte Füge- bzw. Schweißverfahren. Der Schweißeignung von MPEA wurde bis Ende 2021 nur äußert wenig Aufmerksamkeit zuteil. Die Auswirkungen durch Schweißprozesse auf die Metallurgie und die gewünschten Eigenschaften sind bisher kaum bekannt und limitieren die potenzielle Anwendbarkeit als Funktions- oder Konstruktionswerkstoffe.&#13;
In einem interdisziplinären BAM-Forschungsprojekt werden aktuell grundlegende Untersuchungen zur Schweißverarbeitung und resultierender Mikrostruktur-Anwendungseigenschafts-Beziehung verschiedener MPEA durchgeführt. Insbesondere Wärmeeinflusszone und Schweißgut sind geprägt durch eine Mikrostruktur, die aus Ungleichgewichtszuständen resultiert. Im Falle von MPEA wurde dies bisher nicht systematisch untersucht. Dazu erfolgte im Rahmen des Projektes eine umfassende Literaturauswertung zum Schweißen von MPEA und Zusammenfassung in einer umfassenden, systematischen Datenbasis. Aus diesem Grund sollen in der vorliegenden Studie die bisher bedeutsamsten Erkenntnisse zur Schweißbarkeit von MPEA systematisch nach MPEA-Typ und Schweißverfahren geordnet und mit eigenen aktuellen Forschungsergebnissen verglichen werden. Durch WIG- und Rührreibschweißversuche an den MPEA-Systemen CoCrNiFeMn bzw. CoCrNi konnten im Projektverlauf bereits wesentliche Fragestellungen beantwortet werden. Dazu zählen Auftreten bzw. Verhinderung intermetallischer Phasen/Seigerungen oder deren Auswirkung auf die Eigenschaften der Schweißverbindung (bspw. Festigkeit oder Korrosionsbeständigkeit).</abstract>
    <enrichment key="eventName">DVS Congress</enrichment>
    <enrichment key="eventPlace">Koblenz, Germany</enrichment>
    <enrichment key="eventStart">19.09.2022</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Tim Richter</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High Entropy Alloy</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Multielementlegierungen</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>59577</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>11</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Springer Science and Business Media LLC</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Local mechanical properties of dissimilar metal TIG welded joints of CoCrFeMnNi high entropy alloy and AISI 304 austenitic steel</title>
    <abstract language="eng">Multiple principal element alloys encompass the well-known high entropy alloys (HEA). The alloy system represents a new class of materials consisting of at least three alloying elements, each containing 5 to 35 at.%. Thus, this alloying concept differs fundamentally from conventional materials such as steel or nickel alloys. For this purpose, the alloying elements are specifically selected, the microstructures are adjusted in a single-phase and, in some cases, multi-phase manner. In particular, conflicting goals, such as the trade-off between strength and ductility in conventional steels, are overcome. However, in the last 20 years, the focus has been on material synthesis. With the increase in available material quantities, the focus is now on processing issues such as joining and welding processes. The weldability of HEAs has received very little attention so far. The experience with dissimilar metal welds is completely lacking but is essential for the application of these materials in combination with conventional materials. The present study presents comprehensive experimental results on the weldability of an equimolar CoCrFeMnNi-HEA in cold-rolled and heat-treated condition, which was joined by tungsten inert gas welding to an austenitic steel AISI 304. The mechanical properties of the dissimilar metal welds were characterized by cross-weld tensile samples, whereas the local deformation in the weld of the different welding zones was measured by digital image correlation. In accordance with the respective initial HEA condition (cold-rolled vs. heat-treated), the local strain behavior was divergent and influenced the global mechanical properties of both DMW types. Nonetheless, the experiments provided proof in principle of the weldability for dissimilar joints of the CoCrFeMnNi-HEA welded to conventional materials like austenitic stainless steels ensuring a corresponding capability for mechanical loading. This allows further considerations on the application of these innovative materials.</abstract>
    <parentTitle language="eng">Welding in the World</parentTitle>
    <identifier type="doi">10.1007/s40194-024-01718-4</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-595775</identifier>
    <identifier type="issn">0043-2288</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="opus_import_data">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,2,27]],"date-time":"2024-02-27T00:26:13Z","timestamp":1708993573334},"reference-count":41,"publisher":"Springer Science and Business Media LLC","license":[{"start":{"date-parts":[[2024,2,26]],"date-time":"2024-02-26T00:00:00Z","timestamp":1708905600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,2,26]],"date-time":"2024-02-26T00:00:00Z","timestamp":1708905600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Bundesanstalt f\u00fcr Materialforschung und -pr\u00fcfung (BAM)"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Weld World"],"abstract":"&lt;jats:title&gt;Abstract&lt;\/jats:title&gt;&lt;jats:p&gt;Multiple principal element alloys encompass the well-known high entropy alloys (HEA). The alloy system represents a new class of materials consisting of at least three alloying elements, each containing 5 to 35 at.%. Thus, this alloying concept differs fundamentally from conventional materials such as steel or nickel alloys. For this purpose, the alloying elements are specifically selected, the microstructures are adjusted in a single-phase and, in some cases, multi-phase manner. In particular, conflicting goals, such as the trade-off between strength and ductility in conventional steels, are overcome. However, in the last 20\u00a0years, the focus has been on material synthesis. With the increase in available material quantities, the focus is now on processing issues such as joining and welding processes. The weldability of HEAs has received very little attention so far. The experience with dissimilar metal welds is completely lacking but is essential for the application of these materials in combination with conventional materials. The present study presents comprehensive experimental results on the weldability of an equimolar CoCrFeMnNi-HEA in cold-rolled and heat-treated condition, which was joined by tungsten inert gas welding to an austenitic steel AISI 304. The mechanical properties of the dissimilar metal welds were characterized by cross-weld tensile samples, whereas the local deformation in the weld of the different welding zones was measured by digital image correlation. In accordance with the respective initial HEA condition (cold-rolled vs. heat-treated), the local strain behavior was divergent and influenced the global mechanical properties of both DMW types. Nonetheless, the experiments provided proof in principle of the weldability for dissimilar joints of the CoCrFeMnNi-HEA welded to conventional materials like austenitic stainless steels ensuring a corresponding capability for mechanical loading. This allows further considerations on the application of these innovative materials.&lt;\/jats:p&gt;","DOI":"10.1007\/s40194-024-01718-4","type":"journal-article","created":{"date-parts":[[2024,2,26]],"date-time":"2024-02-26T05:02:21Z","timestamp":1708923741000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Local mechanical properties of dissimilar metal TIG welded joints of CoCrFeMnNi high entropy alloy and AISI 304 austenitic steel"],"prefix":"10.1007","author":[{"ORCID":"http:\/\/orcid.org\/0000-0003-4490-4688","authenticated-orcid":false,"given":"Michael","family":"Rhode","sequence":"first","affiliation":[]},{"given":"Kjell","family":"Erxleben","sequence":"additional","affiliation":[]},{"given":"Tim","family":"Richter","sequence":"additional","affiliation":[]},{"given":"Dirk","family":"Schroepfer","sequence":"additional","affiliation":[]},{"given":"Tobias","family":"Mente","sequence":"additional","affiliation":[]},{"given":"Thomas","family":"Michael","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2024,2,26]]},"reference":[{"key":"1718_CR1","doi-asserted-by":"publisher","first-page":"213","DOI":"10.1016\/j.msea.2003.10.257","volume":"375\u2013377","author":"B Cantor","year":"2004","unstructured":"Cantor B, Chang I, Knight P et al (2004) Microstructural development in equiatomic multicomponent alloys. Mater Sci Eng A 375\u2013377:213\u2013218. https:\/\/doi.org\/10.1016\/j.msea.2003.10.257","journal-title":"Mater Sci Eng A"},{"issue":"19","key":"1718_CR2","doi-asserted-by":"publisher","first-page":"3129","DOI":"10.1557\/jmr.2018.283","volume":"33","author":"JW Yeh","year":"2018","unstructured":"Yeh JW, Lin SJ (2018) Breakthrough applications of high-entropy materials. J Mater Res 33(19):3129\u20133137. https:\/\/doi.org\/10.1557\/jmr.2018.283","journal-title":"J Mater Res"},{"key":"1718_CR3","unstructured":"Heeger Materials (2023) Fe-Co-Ni-Cr-Mo spherical high-entropy alloy (HEA) powder. Heeger Materials Inc., St. Denver, CO, USA. Accessible via: https:\/\/heegermaterials.com\/spherical-powder\/1490-spherical-refractory-high-entropy-alloy-powder-hea-fe-co-ni-cr-mo.html. Accessed 2023\u201309\u201307"},{"key":"1718_CR4","unstructured":"Stanford Advanced Materials (2023) DP3189 FeCrNiMnAl high-entropy alloy (HEA) spherical powder. Stanford Advanced Materials Inc., Lake Forest, CA, USA. Accessible via: https:\/\/www.samaterials.com\/fecrnimnal-high-entropy-alloy-hea-spherical-powder.html. Accessed 2023\u201309\u201307"},{"key":"1718_CR5","doi-asserted-by":"publisher","first-page":"1645","DOI":"10.1007\/s40194-021-01110-6","volume":"65","author":"M Rhode","year":"2021","unstructured":"Rhode M, Richter T, Schroepfer D (2021) Welding of high-entropy alloys and compositionally complex alloys - an overview. Weld World 65:1645\u20131659. https:\/\/doi.org\/10.1007\/s40194-021-01110-6","journal-title":"Weld World"},{"key":"1718_CR6","doi-asserted-by":"publisher","first-page":"293","DOI":"10.1016\/j.jmapro.2021.05.042","volume":"68A","author":"J Li","year":"2021","unstructured":"Li J, Meng X, Wan L et al (2021) Welding of high entropy alloys: progresses, challenges and perspectives. J Manuf Process 68A:293\u2013331. https:\/\/doi.org\/10.1016\/j.jmapro.2021.05.042","journal-title":"J Manuf Process"},{"issue":"2","key":"1718_CR7","doi-asserted-by":"publisher","first-page":"212","DOI":"10.3390\/met10020212","volume":"10","author":"JG Lopes","year":"2020","unstructured":"Lopes JG, Oliveira JP (2020) A short review on welding and joining of high entropy alloys. Metals 10(2):212. https:\/\/doi.org\/10.3390\/met10020212","journal-title":"Metals"},{"issue":"4","key":"1718_CR8","doi-asserted-by":"publisher","first-page":"431","DOI":"10.3390\/e21040431","volume":"21","author":"J Guo","year":"2019","unstructured":"Guo J, Tang C, Rothwell G et al (2019) Welding of high entropy alloys - a review. Entropy 21(4):431. https:\/\/doi.org\/10.3390\/e21040431","journal-title":"Entropy"},{"issue":"11","key":"1718_CR9","doi-asserted-by":"publisher","first-page":"1206","DOI":"10.3390\/met9111206","volume":"9","author":"P Carlone","year":"2019","unstructured":"Carlone P, Astarita A (2019) Dissimilar metal welding. Metals 9(11):1206. https:\/\/doi.org\/10.3390\/met9111206","journal-title":"Metals"},{"issue":"9\u201312","key":"1718_CR10","doi-asserted-by":"publisher","first-page":"2845","DOI":"10.1007\/s00170-019-03353-6","volume":"102","author":"Y Fang","year":"2019","unstructured":"Fang Y, Jiang X, Mo D et al (2019) A review on dissimilar metals\u2019 welding methods and mechanisms with interlayer. Int J Adv Manuf Technol 102(9\u201312):2845\u20132863. https:\/\/doi.org\/10.1007\/s00170-019-03353-6","journal-title":"Int J Adv Manuf Technol"},{"key":"1718_CR11","doi-asserted-by":"publisher","first-page":"115053","DOI":"10.1016\/j.scriptamat.2022.115053","volume":"222","author":"J Shen","year":"2023","unstructured":"Shen J, Goncalves R, Choi YT et al (2023) Microstructure and mechanical properties of gas metal arc welded CoCrFeMnNi joints using a 308 stainless steel filler metal. Scripta Mater 222:115053. https:\/\/doi.org\/10.1016\/j.scriptamat.2022.115053","journal-title":"Scripta Mater"},{"issue":"2","key":"1718_CR12","doi-asserted-by":"publisher","first-page":"127","DOI":"10.1080\/13621718.2019.1644471","volume":"25","author":"H Nam","year":"2019","unstructured":"Nam H, Park E, Chun EJ et al (2019) Laser dissimilar weldability of cast and rolled CoCrFeMnNi high-entropy alloys for cryogenic applications. Sci Technol Weld Joining 25(2):127\u2013134. https:\/\/doi.org\/10.1080\/13621718.2019.1644471","journal-title":"Sci Technol Weld Joining"},{"issue":"11","key":"1718_CR13","doi-asserted-by":"publisher","first-page":"4280","DOI":"10.1007\/s11837-022-05500-z","volume":"74","author":"N Samiuddin","year":"2022","unstructured":"Samiuddin N, Li J, Muzamil M et al (2022) Parametric optimization of diffusion welding process in joining of CoCrNi medium-entropy alloys (MEA) and SUS 304 stainless steel using full factorial design. JOM 74(11):4280\u20134293. https:\/\/doi.org\/10.1007\/s11837-022-05500-z","journal-title":"JOM"},{"key":"1718_CR14","doi-asserted-by":"publisher","first-page":"110717","DOI":"10.1016\/j.matdes.2022.110717","volume":"219","author":"JP Oliveira","year":"2022","unstructured":"Oliveira JP, Shamsolhodaei A, Shen J et al (2022) Improving the ductility in laser welded joints of CoCrFeMnNi high entropy alloy to 316 stainless steel. Mater Des 219:110717. https:\/\/doi.org\/10.1016\/j.matdes.2022.110717","journal-title":"Mater Des"},{"key":"1718_CR15","doi-asserted-by":"publisher","first-page":"142979","DOI":"10.1016\/j.msea.2022.142979","volume":"840","author":"H Do","year":"2022","unstructured":"Do H, Asadi S, Park N (2022) Microstructural and mechanical properties of dissimilar friction stir welded CoCrFeMnNi high entropy alloy to STS304 stainless steel. Mater Sci Eng A 840:142979. https:\/\/doi.org\/10.1016\/j.msea.2022.142979","journal-title":"Mater Sci Eng A"},{"key":"1718_CR16","doi-asserted-by":"publisher","first-page":"95","DOI":"10.1016\/j.jmst.2021.02.003","volume":"85","author":"NK Adomako","year":"2021","unstructured":"Adomako NK, Shin G, Park N et al (2021) Laser dissimilar welding of CoCrFeMnNi-high entropy alloy and duplex stainless steel. J Mater Sci Technol 85:95\u2013105. https:\/\/doi.org\/10.1016\/j.jmst.2021.02.003","journal-title":"J Mater Sci Technol"},{"issue":"1","key":"1718_CR17","doi-asserted-by":"publisher","first-page":"78","DOI":"10.3390\/e23010078","volume":"23","author":"D Luo","year":"2021","unstructured":"Luo D, Xiao Y, Hardwick L et al (2021) High entropy alloys as filler metals for joining. Entropy 23(1):78. https:\/\/doi.org\/10.3390\/e23010078","journal-title":"Entropy"},{"issue":"1","key":"1718_CR18","doi-asserted-by":"publisher","first-page":"168000","DOI":"10.1016\/j.jallcom.2022.168000","volume":"935","author":"KS Disna Sahane","year":"2023","unstructured":"Disna Sahane KS, Singh S, Sivaprahasam D et al (2023) Investigation on high entropy alloys as interconnect material for intermediate temperature solid oxide fuel cells. J Alloy Compd 935(1):168000. https:\/\/doi.org\/10.1016\/j.jallcom.2022.168000","journal-title":"J Alloy Compd"},{"issue":"5\u20136","key":"1718_CR19","doi-asserted-by":"publisher","first-page":"629","DOI":"10.1007\/s11085-016-9616-1","volume":"85","author":"G Laplanche","year":"2016","unstructured":"Laplanche G, Volkert UF, Eggeler G et al (2016) Oxidation behavior of the CrMnFeCoNi high-entropy alloy. Oxid Met 85(5\u20136):629\u2013645. https:\/\/doi.org\/10.1007\/s11085-016-9616-1","journal-title":"Oxid Met"},{"key":"1718_CR20","doi-asserted-by":"publisher","first-page":"125271","DOI":"10.1016\/j.matchemphys.2021.125271","volume":"275","author":"T Richter","year":"2022","unstructured":"Richter T, Schroepfer D, Rhode M et al (2022) Influence of machining on the surface integrity of high- and medium-entropy alloys. Mater Chem Phys 275:125271. https:\/\/doi.org\/10.1016\/j.matchemphys.2021.125271","journal-title":"Mater Chem Phys"},{"issue":"6","key":"1718_CR21","doi-asserted-by":"publisher","first-page":"147","DOI":"10.3390\/jmmp6060147","volume":"6","author":"T Richter","year":"2022","unstructured":"Richter T, Schroepfer D, Rhode M (2022) Residual stresses in a high- and a medium-entropy alloy due to TIG and friction stir welding. J Manuf Mater Process 6(6):147. https:\/\/doi.org\/10.3390\/jmmp6060147","journal-title":"J Manuf Mater Process"},{"issue":"1","key":"1718_CR22","doi-asserted-by":"publisher","first-page":"5","DOI":"10.3390\/jmmp6010005","volume":"6","author":"T Richter","year":"2022","unstructured":"Richter T, Giese M, Rhode M et al (2022) Influence of surface preparation on cracking phenomena in TIG-welded high and medium entropy alloys. J Manuf Mater Process 6(1):5. https:\/\/doi.org\/10.3390\/jmmp6010005","journal-title":"J Manuf Mater Process"},{"key":"1718_CR23","unstructured":"Strassburg FW, Wehner H (2009) Schwei\u00dfen nichtrostender St\u00e4hle. DVS-Fachb\u00fccher No. 67, DVS-Verlag D\u00fcsseldorf, Germany, 4th ed"},{"key":"1718_CR24","doi-asserted-by":"publisher","unstructured":"DIN EN ISO 14175: Welding consumables - gases and gas mixtures for fusion welding and allied processes. German version of EN ISO 14175:2008. Beuth-Verlag, Berlin, Germany. https:\/\/doi.org\/10.31030\/1401612","DOI":"10.31030\/1401612"},{"key":"1718_CR25","doi-asserted-by":"publisher","unstructured":"DIN 50159\u20131:2022: Metallische Werkstoffe - H\u00e4rtepr\u00fcfung nach dem UCI-Verfahren - Teil 1: Pr\u00fcfverfahren (in German). English title: Metallic materials - hardness testing with the UCI method - Part 1: Test method. Beuth-Verlag GmbH, Berlin, Germany. https:\/\/doi.org\/10.31030\/3346612","DOI":"10.31030\/3346612"},{"key":"1718_CR26","doi-asserted-by":"publisher","unstructured":"DIN EN ISO 6892\u20131: Metallic materials - tensile testing \u2013 part 1: method of test at room temperature. German version of EN ISO 6892\u20131:2019. Beuth-Verlag, Berlin, Germany. https:\/\/doi.org\/10.31030\/3132591","DOI":"10.31030\/3132591"},{"issue":"7","key":"1718_CR27","doi-asserted-by":"publisher","first-page":"585","DOI":"10.1080\/13621718.2018.1430114","volume":"23","author":"Z Wu","year":"2018","unstructured":"Wu Z, David SA, Leonard DN et al (2018) Microstructures and mechanical properties of a welded CoCrFeMnNi high-entropy alloy. Sci Tech Weld Join 23(7):585\u2013595. https:\/\/doi.org\/10.1080\/13621718.2018.1430114","journal-title":"Sci Tech Weld Join"},{"key":"1718_CR28","doi-asserted-by":"publisher","unstructured":"Richter T, Erxleben K, Rhode M et al (2023) Microstructure characterization of dissimilar metal welds of innovative high- and medium-entropy alloys to austenitic stainless steels joint by tungsten inert gas and friction stir weldingg. Weld World\u00a0 1\u20139. https:\/\/doi.org\/10.1007\/s40194-023-01618-z","DOI":"10.1007\/s40194-023-01618-z"},{"key":"1718_CR29","doi-asserted-by":"publisher","first-page":"20159","DOI":"10.1038\/srep20159","volume":"6","author":"K Jin","year":"2016","unstructured":"Jin K, Sales BC, Stocks GM et al (2016) Tailoring the physical properties of Ni-based single-phase equiatomic alloys by modifying the chemical complexity. Sci Rep 6:20159. https:\/\/doi.org\/10.1038\/srep20159","journal-title":"Sci Rep"},{"key":"1718_CR30","doi-asserted-by":"publisher","first-page":"107029","DOI":"10.1016\/j.intermet.2020.107029","volume":"129","author":"J Saha","year":"2021","unstructured":"Saha J, Ummethala G, Malladi SRK et al (2021) Severe warm-rolling mediated microstructure and texture of equiatomic CoCrFeMnNi high entropy alloy: a comparison with cold-rolling. Intermetallics 129:107029. https:\/\/doi.org\/10.1016\/j.intermet.2020.107029","journal-title":"Intermetallics"},{"key":"1718_CR31","doi-asserted-by":"publisher","first-page":"189","DOI":"10.1016\/j.matchar.2015.09.027","volume":"109","author":"G Dan Sathiaraj","year":"2015","unstructured":"Dan Sathiaraj G, Bhattacharjee PP (2015) Effect of cold-rolling strain on the evolution of annealing texture of equiatomic CoCrFeMnNi high entropy alloy. Mater Charact 109:189\u2013197. https:\/\/doi.org\/10.1016\/j.matchar.2015.09.027","journal-title":"Mater Charact"},{"issue":"2","key":"1718_CR32","doi-asserted-by":"publisher","first-page":"386","DOI":"10.1007\/s11595-015-1157-y","volume":"30","author":"DZ Li","year":"2014","unstructured":"Li DZ, Wei YH, Song JL et al (2014) Effect of heat-treatment temperature on the mechanical properties and microstructural evolution of cold-rolled twinning-induced plasticity steel. J Wuhan Univ Technol - Mater Sci Ed 30(2):386\u2013391. https:\/\/doi.org\/10.1007\/s11595-015-1157-y","journal-title":"J Wuhan Univ Technol - Mater Sci Ed"},{"key":"1718_CR33","doi-asserted-by":"publisher","unstructured":"ASTM A370\u201323: Standard methods and definitions for mechanical testing of steel products. 2017 Edition. ASTM International, West Conshohocken, PA, USA. https:\/\/doi.org\/10.1520\/A0370-23","DOI":"10.1520\/A0370-23"},{"key":"1718_CR34","doi-asserted-by":"crossref","unstructured":"McGuire MF (2008) Stainless steels for design engineers. ASM International, Materials Park, OH, USA","DOI":"10.31399\/asm.tb.ssde.9781627082860"},{"issue":"10","key":"1718_CR35","first-page":"355-s","volume":"78","author":"AP Reynolds","year":"1999","unstructured":"Reynolds AP, Duvall F (1999) Digital image correlation for determination of weld and base metal constitutive behavior. Weld J 78(10):355-s-360-s","journal-title":"Weld J"},{"key":"1718_CR36","unstructured":"Hertzberg RW, Vinci RP, Hertzberg JL (2012) Deformation and fracture mechanics of engineering materials. Wiley &amp; Sons Ltd, New York, USA, 5th ed"},{"issue":"1","key":"1718_CR37","doi-asserted-by":"publisher","first-page":"8","DOI":"10.5781\/JWJ.2020.38.1.1","volume":"38","author":"M Abdul Karim","year":"2020","unstructured":"Abdul Karim M, Park YD (2020) A review on welding of dissimilar metals in car body manufacturing. J Weld Join 38(1):8\u201323. https:\/\/doi.org\/10.5781\/JWJ.2020.38.1.1","journal-title":"J Weld Join"},{"key":"1718_CR38","doi-asserted-by":"publisher","first-page":"54","DOI":"10.1016\/j.scriptamat.2017.03.029","volume":"135","author":"Y Zhao","year":"2017","unstructured":"Zhao Y, Lee DH, Seok MY et al (2017) Resistance of CoCrFeMnNi high-entropy alloy to gaseous hydrogen embrittlement. Scripta Mater 135:54\u201358. https:\/\/doi.org\/10.1016\/j.scriptamat.2017.03.029","journal-title":"Scripta Mater"},{"issue":"10","key":"1718_CR39","doi-asserted-by":"publisher","first-page":"1003","DOI":"10.1016\/j.mattod.2018.07.015","volume":"21","author":"H Luo","year":"2018","unstructured":"Luo H, Lu WJ, Fang XF et al (2018) Beating hydrogen with its own weapon: nano-twin gradients enhance embrittlement resistance of a high-entropy alloy. Mater Today 21(10):1003\u20131009. https:\/\/doi.org\/10.1016\/j.mattod.2018.07.015","journal-title":"Mater Today"},{"key":"1718_CR40","doi-asserted-by":"publisher","DOI":"10.1088\/1757-899X\/882\/1\/012015Richter","volume":"882","author":"M Rhode","year":"2020","unstructured":"Rhode M, Wetzel A, Oczan O et al (2020) Hydrogen diffusion and local Volta potential in high- and medium-entropy alloys. IOP Conf Ser: Mater Sci Eng 882:012015. https:\/\/doi.org\/10.1088\/1757-899X\/882\/1\/012015Richter","journal-title":"IOP Conf Ser: Mater Sci Eng"},{"key":"1718_CR41","doi-asserted-by":"publisher","first-page":"131","DOI":"10.1016\/j.corsci.2018.02.031","volume":"134","author":"H Luo","year":"2018","unstructured":"Luo H, Li ZM, Mingers AM et al (2018) Corrosion behavior of an equiatomic CoCrFeMnNi high-entropy alloy compared with 304 stainless steel in sulfuric acid solution. Corros Sci 134:131\u2013139. https:\/\/doi.org\/10.1016\/j.corsci.2018.02.031","journal-title":"Corros Sci"}],"container-title":["Welding in the World"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s40194-024-01718-4.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s40194-024-01718-4\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s40194-024-01718-4.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,2,26]],"date-time":"2024-02-26T05:21:14Z","timestamp":1708924874000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s40194-024-01718-4"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,2,26]]},"references-count":41,"alternative-id":["1718"],"URL":"http:\/\/dx.doi.org\/10.1007\/s40194-024-01718-4","relation":{},"ISSN":["0043-2288","1878-6669"],"issn-type":[{"value":"0043-2288","type":"print"},{"value":"1878-6669","type":"electronic"}],"subject":["Metals and Alloys","Mechanical Engineering","Mechanics of Materials"],"published":{"date-parts":[[2024,2,26]]},"assertion":[{"value":"10 November 2023","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"7 February 2024","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"26 February 2024","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare no competing interests.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}</enrichment>
    <enrichment key="local_crossrefDocumentType">journal-article</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">18.03.2024</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Michael Rhode</author>
    <author>Kjell Erxleben</author>
    <author>Tim Richter</author>
    <author>Dirk Schröpfer</author>
    <author>Tobias Mente</author>
    <author>Thomas Michael</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>TIG welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High-entropy alloys</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mechanical properties</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Dissimilar metal weld</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
    <collection role="themenfelder" number="">Materialdesign</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/59577/Online_first_s40194-024-01718-4.pdf</file>
  </doc>
  <doc>
    <id>54169</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>13</pageLast>
    <pageNumber/>
    <edition/>
    <issue>5</issue>
    <volume>6</volume>
    <type>article</type>
    <publisherName>MDPI</publisherName>
    <publisherPlace>Basel (CH)</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Influence of Surface Preparation on Cracking Phenomena in TIG-Welded High and Medium Entropy Alloys</title>
    <abstract language="eng">Multi-element systems with defined entropy (HEA—high entropy alloy or MEA—medium entropy alloy) are rather new material concepts that are becoming increasingly important in materials research and development. Some HEA systems show significantly improved properties or combinations of properties, e.g., the overcoming of the trade-off between high strength and ductility. Thus, the synthesis, the resulting microstructures, and properties of HEA have been primarily investigated so far. In addition, processing is crucial to achieve a transfer of potential HEA/MEA materials to real applications, e.g., highly stressed components. Since fusion welding is the most important joining process for metals, it is of vital importance to investigate the weldability of these materials. However, this has rarely been the subject of research to date. For that reason, in this work, the weldability depending on the surface preparation of a CoCrFeMnNi HEA and a CoCrNi MEA for TIG welding is investigated. The fusion welding of longer plates is described here for the first time for the CoCrNi alloy. The welds of both materials showed distinct formation of cracks in the heat affected Zone (HAZ). Optical and scanning electron microscopy analysis clearly confirmed an intergranular fracture topography. However, based on the results, the crack mechanism cannot be conclusively identified as either a liquid metal embrittlement (LME) or hot cracking-like liquid film separation.</abstract>
    <parentTitle language="eng">Journal of Manufacturing and Materials Processing</parentTitle>
    <identifier type="issn">2504-4494</identifier>
    <identifier type="doi">10.3390/jmmp6010005</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-541697</identifier>
    <enrichment key="eventName">2nd International Conference on Advanced Joining Processes</enrichment>
    <enrichment key="eventPlace">Sintra, Portugal</enrichment>
    <enrichment key="eventStart">21.10.2021</enrichment>
    <enrichment key="eventEnd">22.10.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">04.04.2022</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Tim Richter</author>
    <author>Marcel Giese</author>
    <author>Michael Rhode</author>
    <author>Dirk Schröpfer</author>
    <author>Thomas Michael</author>
    <author>Tobias Fritsch</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>TIG welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cracking</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High entropy alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Medium entropy alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surface preparation</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.5 Röntgenbildgebung</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/54169/jmmp-06-00005-v2_Authors_copy.pdf</file>
  </doc>
  <doc>
    <id>57299</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>18</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>13</volume>
    <type>article</type>
    <publisherName>MDPI (Multidisciplinary Digital Publishing Institute)</publisherName>
    <publisherPlace>Basel (CH)</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Influence of Milling Conditions on AlxCoCrFeNiMoy Multi-Principal-Element Alloys</title>
    <abstract language="eng">Multi-Principal-Element or High-Entropy Alloys (MPEAs/HEAs) have gained increasing interest in the past two decades largely due to their outstanding properties such as superior mechanical strength and corrosion resistance. However, research studies on their processability are still scarce. This work assesses the effect of different machining conditions on the machinability of these novel alloys, with the objective of advancing the introduction of MPEA systems into industrial applications. The present study focuses on the experimental analysis of finish-milling conditions and their effects on the milling process and resulting surface finish of CoCrFeNi, Al0.3CoCrFeNi and Al0.3CoCrFeNiMo0.2 alloys fabricated via Spark Plasma Sintering. Ball-nose-end milling experiments have been carried out various milling parameters such as cutting speed, feed per cutting edge, and ultrasonic assistance. In situ measurements of cutting forces and temperature on the tool edge were performed during the experiments, and surface finish and tool wear were analyzed afterwards. The results exhibited decreasing cutting forces by means of low feed per cutting edge and reduced process temperatures at low cutting speed, with the use of ultrasonic-assisted milling. It was shown that the machinability of these modern alloys through conventional, as well as modern machining methods such as ultrasonic-assisted milling, is viable, and common theories in machining can be transferred to these novel MPEAs.</abstract>
    <parentTitle language="eng">Coatings</parentTitle>
    <identifier type="doi">10.3390/coatings13030662</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-572990</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">17.04.2023</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Diego Delgado Arroyo</author>
    <author>Tim Richter</author>
    <author>Dirk Schröpfer</author>
    <author>Andreas Boerner</author>
    <author>Michael Rhode</author>
    <author>T. Lindner</author>
    <author>B. Preuß</author>
    <author>T. Lampke</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Multi-principal element alloys</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Finish milling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Spark plasma sintering</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic-assisted milling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microstructure characterization</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
    <collection role="themenfelder" number="">Materialdesign</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/57299/MDPI_Coatings_Milling_AlCoCrFeNiMo_mit_TU_Chemnitz.pdf</file>
  </doc>
  <doc>
    <id>57298</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>14</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>35</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace>Amsterdam (NL)</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Microstructure and texture characterisation of friction stir welded CoCrNi and CoCrFeMnNi multi-principle element alloys</title>
    <abstract language="eng">This work investigates the microstructure formed in friction stir welds of FCC alloys, focused on two multiprincipal alloys: a CoCrFeMnNi high-entropy alloy (HEA) and a CoCrNi medium-entropy alloy (MEA). A commercial stainless steel AISI 304 is used for comparison. The largest nugget was formed in the MEA, while the smallest was formed in the HEA. Grain refinement occurs in the stirred zone in all welds. Discontinuous dynamic recrystallisation is the predominant restoration mechanism during friction stir welding of the three investigated alloys. A sharp decrement in the Σ3 boundary fraction occurs in the stirred zone of the AISI 304 and HEA welds, while comparable values with the base metal are found for the MEA weld. The peak in the maximum index of crystallographic texture is observed on the advancing side of the stirred zone of the AISI 304 weld. A strong &lt;001&gt; θ-fibre texture is formed in the advancing side of the nugget in the AISI 304 from a well-established {123} &lt;634&gt; S-type texture in the base metal. Multiple crystallographic texture components without specific fibres are identified in most regions of the welds, indicating the complex shear path history during friction stir welding.</abstract>
    <parentTitle language="eng">Materials Today Communications</parentTitle>
    <identifier type="doi">10.1016/j.mtcomm.2023.105870</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-572987</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">05.06.2023</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>R.H. Buzolin</author>
    <author>Tim Richter</author>
    <author>F. Pixner</author>
    <author>Michael Rhode</author>
    <author>Dirk Schröpfer</author>
    <author>N. Enzinger</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microstructure</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Multiple principal element alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Friction stir welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Electron backscattered diffraction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Crystallographic texture</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
    <collection role="themenfelder" number="">Materialdesign</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/57298/Buzolin_Richter_Microstructure_MPEA_FSW.pdf</file>
  </doc>
  <doc>
    <id>56671</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Residual stresses in near-component specimens of a high and a medium entropy alloy due to tig and friction stir welding</title>
    <abstract language="eng">The new alloying concept of multi-element systems with defined entropy (HEA - High Entropy Alloy or MEA - Medium Entropy Alloy) is gaining increasing importance in materials research. Significantly improved properties or combinations of properties are shown by some HEA/MEA-systems, which have the potential to substitute conventional alloys such steels and are therefore promising for a wide range of applications, e.g., overcome of the trade-off between high strength and ductility. Thus, primarily the production and resulting microstructures of HEA as well as properties have been investigated so far. Furthermore, processing is a main issue to transfer HEA systems from the laboratory to real components, e.g., for highly stressed components. Since welding is the most important joining process for metals, it is crucial to investigate the influence of welding processing on these material properties to guarantee component integrity. Welding leads to residual stresses, which significantly affect the component integrity. Only a very few studies on the effect of welding on residual stresses in HEA and MEA weld joints are available so far. Hence, the focus of this study is the residual stress formation and distribution in a CoCrFeMnNi HEA and ternary CoCrNi MEA using two different welding processes: Tungsten Inert Gas (TIG) welding and soldi-state Friction Stir Welding (FSW). As a pathway for application of HEA in this investigation for the first time residual stress analyses in realistic near-component specimens were performed. The residual stresses were determined by X-ray diffraction (XRD) on the surfaces of top and root weld side. The results were correlated with the local welding microstructures. The results show that both FSW and TIG generate significant tensile residual stresses on the weld surfaces in and transverse to the welding direction. In the case of FSW of the CoCrFeMnNi HEA, the longitudinal residual stresses are in the range of the yield strength of approx. 300 MPa in the weld zone.</abstract>
    <enrichment key="eventName">OVGU-Kolloquium (BMDK des IWF)</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">19.05.2022</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Tim Richter</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High Entropy Alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Residual stresses</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microstructure</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>53607</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Characterization of cracking phenomena in TIG welds of high and medium entropy alloy</title>
    <abstract language="eng">Multi-element systems with defined entropy (HEA - High Entropy Alloy or MEA - Medium Entropy Alloy) are rather new material concepts that are becoming increasingly important in materials research and development. Some HEA systems show significantly improved properties or combinations of properties, e.g., the overcome of the trade-off between high strength and ductility. Thus, the synthesis, the resulting microstructures, and properties of HEA have been primarily investigated so far. In addition, processing is crucial to achieve a transfer of potential HEA/MEA materials to real applications, e.g. highly stressed components. Since fusion welding is the most important joining process for metals, it is of vital importance to investigate the weldability of these materials. However, this has rarely been the subject of research up to date. For that reason, in this work the weldability depending on the surface preparation of a CoCrFeMnNi-HEA and a CoCrNi-MEA for TIG welding is investigated. The fusion welding of longer plates is described here for the first time for the CoCrNi alloy. The welds of both materials showed distinct formation of cracks in the heat affected zone (HAZ). Optical and scanning electron microscopy analysis clearly confirmed an intergranular fracture topography. But based on the results, the crack mechanism cannot be conclusively clarified as either a liquid metal embrittlement (LME) or hot cracking like liquid film separation occurred.</abstract>
    <enrichment key="eventName">2nd International Conference on Advanced Joining Processes</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">21.10.2021</enrichment>
    <enrichment key="eventEnd">22.10.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Tim Richter</author>
    <author>Marcel Diese</author>
    <author>Michael Rhode</author>
    <author>Dirk Schröpfer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High Entropy Alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>TIG welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cracking</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>55462</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Hydrogen embrittlement and mechanical properties of 9 % Cr P92 steel and P91 weld metal</title>
    <abstract language="eng">Martensitic 9 %-Cr steels like P91 and P92 can show an increased susceptibility to delayed hydrogen assisted cracking. The focus of this study was the microstructure and heat treatment effect on the mechanical properties of P92 base material and P91 multi-layer weld metal in both as-welded and post weld heat treated (PWHT) condition.&#13;
Tensile tests with hydrogen free reference samples and electrochemically hydrogen charged samples were carried out, the mechanical properties were assessed and supported by dedicated fractographic analysis. In addition, hydrogen and microstructure dependent fracture criteria were calculated. All investigated microstructures showed a hydrogen influenced degradation of the mechanical properties compared to the hydrogen free reference samples. In that connection, the as welded martensitic P91 weld metal had the highest degree of degradation in presence of hydrogen. The P91 PWHT weld metal and the P92 base material had comparable properties. From that point of view, a significantly increased risk for hydrogen assisted cold cracking during welding fabrication of P91 weld joints must be considered before any heat treatment is conducted.</abstract>
    <enrichment key="eventName">IIW Annual Assembly, Meeting of Commission IX-C</enrichment>
    <enrichment key="eventPlace">Tokyo, Japan</enrichment>
    <enrichment key="eventStart">21.07.2022</enrichment>
    <enrichment key="eventEnd">21.07.22</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Tim Richter</author>
    <author>Michael Rhode</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Creep-resistant steel</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mechanical properties</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hydrogen assisted cracking</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Weld joint</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Degradation</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
    <collection role="themenfelder" number="">Wasserstoff</collection>
  </doc>
  <doc>
    <id>55442</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Weldability of dissimilar metal welds of innovative high and medium entropy alloys to austenitic stainless steels joint by tungsten inert gas and friction stir welding</title>
    <abstract language="deu">The new multi-element alloying concept of systems with defined entropy (HEA - High Entropy Alloy or MEA - Medium Entropy Alloy) is increasing in materials research interest. Improved properties or combinations of properties are shown by several systems. Thus, the resulting microstructures and production of HEA/MEA as well as properties have been primarily investigated so far. Furthermore, processing is a key issue to transfer HEA/MEA systems to real components. Since welding is the most important joining process for metals, it is crucial to investigate the influence of welding to guarantee component integrity. Since most HEA are made of expensive alloying elements such as Co or Ni, they will not be used entirely as structural materials. Thus, it can be advantageous to weld conventional alloys such as austenitic stainless steels with the HEA and MEA to produce components that are both application-oriented and economically viable. Therefore, in this paper, first results of dissimilar metal welding, by tungsten inert gas- (TIG) and friction stir welding (FSW), of a CoCrFeMnNi HEA as well as a CoCrNi MEA with a conventional AISI 304 austenitic stainless steel are presented. The focus is on the microstructure formation due to the two welding processes. The results of TIG welding show a dendritic microstructure, whereas in FSW both materials are stirred but still coexist.</abstract>
    <enrichment key="eventName">75th IIW Annual Assembly</enrichment>
    <enrichment key="eventPlace">Tokyo, Japan</enrichment>
    <enrichment key="eventStart">17.07.2022</enrichment>
    <enrichment key="eventEnd">22.02.2022</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Tim Richter</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>High Entropy Alloy</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Medium Entropy Alloys</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Welding microstructure</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>58152</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Design and construction of a rainfall simulator to test metal runoff at atmospheric conditions</title>
    <abstract language="eng">A rainfall simulator was presented as an environmental assessment tool to quantify wash-off concentrations from metallic materials. It is part of the RUNOFF-project, which studies and re-assesses the durability of roofing and facade materials under current atmospheric conditions in Germany. &#13;
&#13;
Studying building materials is important as they have a significant impact on achieving a variety of goals and targets within the sustainable developments goals (SDGs). The durability of materials is essential to reach sustainability. However, the durability of metallic materials is strongly depended on climate conditions, which have changed as a result of technical measures in industry, climate change and increasing urbanisation. In Germany at least, the data base is not up-to-date leading to prediction models regarding corrosion resistance and durability of metallic materials which can no longer be trusted and therefore need to be re-assessed and updated. Also, not only the demand for sustainable but also environmentally friendly building materials has increased dramatically. A number of construction materials produce chemical hazards, and therefore have negative impacts on water quality, soils health and ecosystems. To limit these impacts, environmental assessment methods and tools are needed to measure and quantify the inputs and outputs of building materials throughout their lifetime.</abstract>
    <enrichment key="eventName">EUROCORR 2023</enrichment>
    <enrichment key="eventPlace">Brussels, Belgium</enrichment>
    <enrichment key="eventStart">27.08.2023</enrichment>
    <enrichment key="eventEnd">31.08.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Nasrin Haacke</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rainfall simulator</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Runoff</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Atmospheric conditions</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Laboratory experiments</value>
    </subject>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">6 Materialchemie</collection>
    <collection role="institutes" number="">6.1 Oberflächen- und Dünnschichtanalyse</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="institutes" number="">7.6 Korrosion und Korrosionsschutz</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>56701</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Innovative Multielement-Legierungen: Aktuelle Ergebnisse zur Schweißbarkeit und Anwendungseigenschaften</title>
    <abstract language="deu">Multielement-Legierungen (MPEA – multiple pricipal element alloys) stellen eine neue Klasse von Werkstoffen dar, die aus mindestens drei äquiatomaren Legierungselementen mit jeweils einem Gehalt von 5–35 Atom-% bestehen. Somit unterscheidet sich das Legierungskonzept fundamental von konventionellen bspw. Stahl- oder Al-basierten Legierungen. In jüngster Zeit lag der Schwerpunkt auf dem Legierungs-Design der MPEA und der Überprüfung bzw. Erreichung der gewünschten Eigenschaften bzw. -kombinationen. Hierzu werden die Legierungselemente gezielt ausgewählt und die Mikrostrukturen ein- und zum Teil auch mehrphasig eingestellt. Ziel sind hochinnovative MPEA mit angepassten Eigenschaften für die industrielle Anwendung. Dabei sollen insbesondere die bei konventionellen Legierungen wesentlichen Zielkonflikte, wie bspw. der Trade-off zwischen Festigkeit und Duktilität, überwunden werden. Darüber hinaus sind mechanische Eigenschaften bei sehr hohen sowie kryogenen Temperaturen bei gleichzeitig höchster Korrosionsbeständigkeit von hohem Interesse. Die Herstellung von Bauteilen erfordert dazu werkstoff- und beanspruchungsgerechte Füge- bzw. Schweißverfahren. Der Schweißeignung von MPEA wurde bis Ende 2021 nur äußert wenig Aufmerksamkeit zuteil. Die Auswirkungen durch Schweißprozesse auf die Metallurgie und die gewünschten Eigenschaften sind bisher kaum bekannt und limitieren die potenzielle Anwendbarkeit als Funktions- oder Konstruktionswerkstoffe.&#13;
In einem interdisziplinären BAM-Forschungsprojekt werden aktuell grundlegende Untersuchungen zur Schweißverarbeitung und resultierender Mikrostruktur-Anwendungseigenschafts-Beziehung verschiedener MPEA durchgeführt. Insbesondere Wärmeeinflusszone und Schweißgut sind geprägt durch eine Mikrostruktur, die aus Ungleichgewichtszuständen resultiert. Im Falle von MPEA wurde dies bisher nicht systematisch untersucht. Dazu erfolgte im Rahmen des Projektes eine umfassende Literaturauswertung zum Schweißen von MPEA und Zusammenfassung in einer umfassenden, systematischen Datenbasis. Aus diesem Grund sollen in der vorliegenden Studie die bisher bedeutsamsten Erkenntnisse zur Schweißbarkeit von MPEA systematisch nach MPEA-Typ und Schweißverfahren geordnet und mit eigenen aktuellen Forschungsergebnissen verglichen werden. Durch WIG- und Rührreibschweißversuche an den MPEA-Systemen CoCrNiFeMn bzw. CoCrNi konnten im Projektverlauf bereits wesentliche Fragestellungen beantwortet werden. Dazu zählen Auftreten bzw. Verhinderung intermetallischer Phasen/Seigerungen oder deren Auswirkung auf die Eigenschaften der Schweißverbindung (bspw. Festigkeit oder Korrosionsbeständigkeit).</abstract>
    <enrichment key="eventName">Bachelor-, Master-, Doktoranden-Kolloquium</enrichment>
    <enrichment key="eventPlace">Magdeburg, Germany</enrichment>
    <enrichment key="eventStart">14.12.2022</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Tim Richter</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>High Entropy Alloy</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Multielementlegierungen</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>52257</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Rührreibschweißen von Hoch- und Mediumentropie-Legierungen</title>
    <abstract language="deu">Hoch- und Mittelentropie-Legierungen (engl. High/Medium Entropy Alloys–HEA/MEA) sind relativ neue Werkstoffklassen. Im Gegensatz zu herkömmlichen Legierungen bestehen HEA aus fünf bzw. MEA aus drei oder vier Legierungselementen im äquiatomaren Gleichgewicht. Viele HEA weisen aufgrund hervorragender struktureller Eigenschaftskombinationen von sehr tiefen bis zu hohen Temperaturen enormes Anwendungspotential auf. Die Anwendung für reale Bauteile stellt jedoch die zentrale Frage der Eignung für die fügetechnische Verarbeitung. Dieser Aspekt findet in der weltweiten Materialforschung bisher kaum Beachtung. Anforderungen an die zuverlässige und sichere fügetechnische Verarbeitung dieser Werkstoffe sind von wesentlicher Bedeutung hinsichtlich wirtschaftlicher Bauteilfertigung für spätere potenzielle Anwendungsbereiche, bspw. in der Energietechnik. Das Rührreibschweißen (engl. Friction Stir Welding–FSW) stellt hierbei einen vielversprechenden Fügeprozess dar, dessen Hauptvorteil in der Schweißprozesstemperatur unterhalb der Schmelztemperatur der zu fügenden Werkstoffe liegt. Dies bedingt die Vermeidung der Ausbildung von harten, versprödenden intermetallischen Phasen, wie sie z. B. beim konventionellen Schmelzschweißen von Eisen-Aluminium-Verbindungen auftreten. Die vorliegende Arbeit stellt grundlegende Untersuchungen zur Schweißbarkeit einer CoCrFeMnNi-Legierung (HEA) und einer CoCrNi-Legierung (MEA) mit dem FSW-Prozess vor. Die Versuchsschweißungen werden mittels mikroskopischer Analysen hinsichtlich des Schweißnahtaufbaus sowie Schweißnahtfehlern charakte-risiert. FSW zeigt sich als grundlegend geeignet zur Verbindungsschweißung der HEA bzw. MEA. Anhand dieser Ergebnisse kann eine weitere Bewertung der Schweißbarkeit erfolgen.</abstract>
    <enrichment key="eventName">4 Niedersächsisches Symposium Materialtechnik Clausthal</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">25.02.2021</enrichment>
    <enrichment key="eventEnd">26.02.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Tim Richter</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochentropie Legierung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Rührreibschweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Mediumentropie Legierung</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="institutes" number="">9.0 Abteilungsleitung und andere</collection>
  </doc>
  <doc>
    <id>63107</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Thermophysically Simulated Weld HAZ and CCT Diagram of� High Strength Low Alloy Pipeline Steel</title>
    <abstract language="deu">Kurzvorstellung der laufenden Projekte "Wasserstoffabhängige mechanische Eigenschaften der Schweißnahtgefüge niedriglegierter Stähle für Ferngasleitungen" und "Praktikable Prüfung geschweißter Ferngasleitungen aus niedrig-legierten Stählen für den sicheren Transport von Wasserstoff" mit kurzem Ergebnisstand und zukünftiger Versuchsplanung/Outlook</abstract>
    <enrichment key="eventName">Sitzung des NA 092-00-05 GA "Gemeinschaftsarbeitsausschuss NAS/NMP:  Zerstörende Prüfung von Schweißverbindungen (DVS AG Q 4/Q 4.1)"</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">20.03.2025</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Gero Fey</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ZTU-Diagramm</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CCT</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>WEZ</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Dilatometry</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pipeline Steel</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="themenfelder" number="">Wasserstoff</collection>
  </doc>
  <doc>
    <id>56719</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>737</pageFirst>
    <pageLast>745</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>382</volume>
    <type>conferenceobject</type>
    <publisherName>DVS Media GmbH</publisherName>
    <publisherPlace>Düsseldorf</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Einfluss von Wärmeführung und Bauteildesign auf die Eigenschaften und fertigungsbedingten Beanspruchungen additiv geschweißter hochfester Feinkornbaustähle</title>
    <abstract language="deu">Hochfeste Feinkornbaustähle verfügen über großes Potenzial für gewichtsoptimierte, effiziente Strukturen in vielen modernen Stahlkonstruktion. Weitere Effizienzsteigerungen können durch additives Fertigen sowie bionische Bauweisen erreicht werden. Hochfeste Zusatzwerkstoffe für additives MSG-Schweißen (engl.: Wire Arc Additive Manufacturing, WAAM) sind bereits von den Schweißzusatzherstellern lieferbar. Eine breite industrielle Anwendung insbesondere für KMU ist aufgrund fehlender quantitativer Erkenntnisse und Richtlinien bezüglich schweißbedingter Beanspruchungen und Bauteilsicherheit während der Herstellung und des Betriebs derzeit stark limitiert. In einem gemeinsamen Forschungsprojekt (FOSTA-P1380/IGF21162BG) der BAM und der TU Chemnitz werden daher die mit Eigenspannungsausbildung und der Gefahr einer Kaltrissbildung verbundenen prozess- und werkstoffbedingten sowie konstruktiven Einflüsse beim WAAM hochfester Stähle untersucht. Der vorliegende Beitrag fokussiert die Analyse der Auswirkungen von Schweißwärmeführung und Design der WAAM-Bauteile auf die Abkühlbedingungen, Gefüge, mechanisch-technologischen Eigenschaften und Eigenspannungen. Hierfür werden geometrisch definierte Probenkörper (Hohlquader) vollautomatisiert mit einem speziellen, hochfesten WAAM-Massivdraht (Streckgrenze &gt;790 MPa) geschweißt. Die Wärmeführung und Probenabmessungen werden innerhalb eines statistischen Versuchsplans variiert. Die Schweißwärmeführung wird dabei so eingestellt, dass die t8/5-Abkühlzeiten im empfohlenen Verarbeitungsbereich (ca. 5 s bis 20 s) sichergestellt sind. Hierzu ließen sich über zusätzliche thermo-physikalische Umformsimulationen mittels Dilatometer die komplexen Wärmezyklen abbilden und die resultierende Zugfestigkeit des Schweißgutes bestimmen. Das WAAM-Schweißen komplexer Geometrien mit variierenden Schweißwärmeführungen und geometrischen Verhältnissen bzw. Wanddicken bedingt neben den Auswirkungen auf die Abkühlbedingungen, Abkühlzeiten und Gefüge deutliche Einflüsse auf die konstruktiven Steifigkeitsverhältnisse beim Schweißen. Es zeigen sich anhand der Schweißexperimente signifikante Auswirkungen durch Probenskalierung und Wärmeeinbringung auf die resultierenden lokalen Eigenspannungen. Die Folge können ungünstige Bauteileigenschaften und risskritische Zugeigenspannungen sein.</abstract>
    <parentTitle language="deu">DVS-Berichte - DVS CONGRESS 2022</parentTitle>
    <identifier type="isbn">978-3-96144-189-1</identifier>
    <enrichment key="eventName">DVS Congress 2022</enrichment>
    <enrichment key="eventPlace">Koblenz, Germany</enrichment>
    <enrichment key="eventStart">19.09.2022</enrichment>
    <enrichment key="eventEnd">21.09.2022</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>R. Scharf-Wildenhain</author>
    <author>A. Hälsig</author>
    <author>J. Hensel</author>
    <author>Karsten Wandtke</author>
    <author>Dirk Schröpfer</author>
    <author>Arne Kromm</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>MAG-Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Additive Fertigung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eigenspannungen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochfester Stahl</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Kaltrisssicherheit</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Wärmeführung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Windenergie</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
  </doc>
  <doc>
    <id>54579</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Projektkurzvorstellung: Bewertung konstruktiv bedingter Erstarrungsrisse beim Schweißen hochfester Feinkornbaustähle</title>
    <abstract language="deu">Die Integrität von Leichtbaustrukturen aus hochfesten Stählen ist zunehmend durch die Bildung von Heißrissen gefährdet. Aktuell treten Erstarrungsrisse an Konstruktionsmerkmalen auf, obwohl heißrisssichere niedriglegierte Grund- und Zusatzwerkstoffe als auch Schweißprozessbedingungen eingesetzt wurden. Werkstoff- und prozessseitig wurden diese Rissursachen bereits eingehend erforscht. Untersuchungen zum Aspekt der konstruktiv bedingten Heißrissvermeidung, aus denen sich Empfehlungen für ein beanspruchungsgerechtes Gestalten für KMU ableiten lassen, liegen bislang lückenhaft vor bzw. sind veraltet und für hochfeste Leichtbauten kaum zielführend. Konstruktive Gegenmaßnahmen zur Vermeidung von Erstarrungsrissen liegen oft nicht vor. Das Design und die konstruktiven Randbedingungen beeinflussen die Erstarrungsrisse entscheidend. Um eine schnelle Umsetzbarkeit der Resultate für KMU zu ermöglichen, soll eine einfache und kostengünstige Methodik zur Heißrissbewertung entwickelt werden. Gerade KMU haben einen hohen Nachholbedarf an heißrisssicheren und wirtschaftlichen Leichtbaulösungen. Konstrukteure und Anwender aus KMU würden durch fundierte Kenntnisse über mögliche erstarrungsrisskritische Beanspruchungszustände kostenintensive Qualitätsmängel vermeiden. Das Ziel ist es, Kenngrößen zu identifizieren, die während des Schweißens unter realitätsnahen Bedingungen erfasst werden können. Diese Parameter werden als Transfergrößen genutzt, um eine Heißrissbewertung eines geschweißten Bauteils zu ermöglichen. Anliegen des Vorhabens wird die Prüfung und Bewertung von typischen Beanspruchungszuständen beim Schweißen von Leichtbaustrukturen hinsichtlich ihrer Erstarrungsrissneigung sein. Durch Ableitung klassifizierter Gestaltungshinweise wird ein signifikanter Beitrag zur Steigerung der Wettbewerbsfähigkeit insbesondere für KMU geliefert. Die Ergebnisse werden in Normen zur sicheren schweißtechnischen Fertigung von Leichtbaustrukturen aus hochfesten Stählen direkt einfließen.</abstract>
    <enrichment key="eventName">Sitzung des NA 092-00-05 GA "Gemeinschaftsarbeitsausschuss NAS/NMP: Zerstörende Prüfung von Schweißverbindungen (DVS AG Q 4/Q 4.1)"</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">10.03.2022</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Arne Kromm</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Erstarrungsrisse</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>hochfester Stahl</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>56722</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Einfluss der Prozessführung auf den Eigenspannungszustand beim WAAM-Schweißen hochfester Stahlbauteile</title>
    <abstract language="deu">Hochfeste Feinkornbaustähle verfügen über großes Potenzial für gewichtsoptimierte, effiziente Strukturen in vielen modernen Stahlkonstruktion. Weitere Effizienzsteigerungen können durch additives Fertigen sowie bionische Bauweisen erreicht werden. Hochfeste Zusatzwerkstoffe für additives MSG-Schweißen (engl.: Wire Arc Additive Manufacturing, WAAM) sind bereits von den Schweißzusatzherstellern lieferbar. Eine breite industrielle Anwendung insbesondere für KMU ist aufgrund fehlender quantitativer Erkenntnisse und Richtlinien bezüglich schweißbedingter Beanspruchungen und Bauteilsicherheit während der Herstellung und des Betriebs derzeit stark limitiert. In einem gemeinsamen Forschungsprojekt (FOSTA-P1380/IGF21162BG) der BAM und der TU Chemnitz werden daher die mit Eigenspannungsausbildung und der Gefahr einer Kaltrissbildung verbundenen prozess- und werkstoffbedingten sowie konstruktiven Einflüsse beim WAAM hochfester Stähle untersucht. Der vorliegende Beitrag fokussiert die Analyse der Auswirkungen von Schweißwärmeführung und Design der WAAM-Bauteile auf die Abkühlbedingungen, Gefüge, mechanisch-technologischen Eigenschaften und Eigenspannungen. Hierfür werden geometrisch definierte Probenkörper (Hohlquader) vollautomatisiert mit einem speziellen, hochfesten WAAM-Massivdraht (Streckgrenze &gt;790 MPa) geschweißt. Die Wärmeführung und Probenabmessungen werden innerhalb eines statistischen Versuchsplans variiert. Die Schweißwärmeführung wird dabei so eingestellt, dass die t8/5-Abkühlzeiten im empfohlenen Verarbeitungsbereich (ca. 5 s bis 20 s) sichergestellt sind. Hierzu ließen sich über zusätzliche thermo-physikalische Umformsimulationen mittels Dilatometer die komplexen Wärmezyklen abbilden und die resultierende Zugfestigkeit des Schweißgutes bestimmen. Das WAAM-Schweißen komplexer Geometrien mit variierenden Schweißwärmeführungen und geometrischen Verhältnissen bzw. Wanddicken bedingt neben den Auswirkungen auf die Abkühlbedingungen, Abkühlzeiten und Gefüge deutliche Einflüsse auf die konstruktiven Steifigkeitsverhältnisse beim Schweißen. Es zeigen sich anhand der Schweißexperimente signifikante Auswirkungen durch Probenskalierung und Wärmeeinbringung auf die resultierenden lokalen Eigenspannungen. Die Folge können ungünstige Bauteileigenschaften und risskritische Zugeigenspannungen sein.&#13;
Im Rahmen der Normungssitzung werden praktikable Verarbeitungsempfehlungen basierend auf den Erkenntnissen des Vh. mit Vertretern aus Industrie und Forschung diskutiert.</abstract>
    <enrichment key="eventName">NA 092-00-05 GA: Gemeinschaftsarbeitsausschuss NAS/NMP: Zerstörende Prüfung von Schweißverbindungen (DVS AG Q 4/Q 4.1)</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">10.03.2022</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Karsten Wandtke</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>MAG-Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Additive Fertigung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eigenspannungen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochfester Stahl</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Kaltrisssicherheit</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Wärmeführung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Windenergie</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
  </doc>
  <doc>
    <id>59753</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Einfluss spanender Bearbeitungsschritte auf die Eigenspannungen additiv gefertigter Komponenten aus hochfestem Stahl</title>
    <abstract language="deu">Diese Studie konzentriert sich auf den Einfluss der Bearbeitung auf die Eigenspannungen und den Verzug von WAAM-Proben. Definierte Proben wurden vollautomatisch mit einem speziellen WAAM-Massivdraht (Streckgrenze &gt;820 MPa) mit unterschiedlichen geometrischen Designs geschweißt. Der Eigenspannungszustand vor und nach dem Abtrennen der AM-Struktur von der Substratplatte wurde mittels Röntgenbeugung an der Probenoberfläche analysiert und durch 3D-Verformungsanalysen mittels Photogrammetrie ergänzt. Die Ergebnisse zeigen einen signifikanten Einfluss der Geometrie auf die Relaxation und Umverteilung der Eigenspannungen.</abstract>
    <enrichment key="eventName">NA 092-00-05 GA "Gemeinschaftsarbeitsausschuss NAS/NMP: Zerstörende Prüfung von Schweißverbindungen (DVS AG Q 4/Q 4.1)</enrichment>
    <enrichment key="eventPlace">Berlin, Germany</enrichment>
    <enrichment key="eventStart">20.03.2024</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Arne Kromm</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>DED-arc</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eigenspannungen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochfester Stahl</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
  </doc>
  <doc>
    <id>55484</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>85</pageFirst>
    <pageLast>99</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>bookpart</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Cham</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Nickel-Iron-Alloy Modification to Enhance Additively Welded Microstructure for Subsequent Milling</title>
    <abstract language="eng">The aerospace industry uses nickel–iron alloys, e.g., FeNi36, to create moulding tools for composite materials, since these alloys have a low coefficient of thermal expansion. Nickel–iron alloys are hard-to-cut materials. The moulding tools are large in size and involve complex structures, making them cost-intensive and difficult to manufacture. Thus, the focus is set on additive manufacturing, which can additionally enable the repair of components in order to eliminate local defects. However, the process usually results in a heterogeneous microstructure and anisotropic mechanical properties. As there is a high demand for a precise and exact fit of the precision moulds and the surface quality, the welded components must be subsequently machined. Additionally, inhomogeneous microstructure may lead to unstable cutting forces and conditions. Consequently, a modification of the microstructure morphology is achieved through specific alloy modifications in order to stabilise and improve the subsequent machining process. Therefore, titanium and zirconium are chosen as modification elements with a maximum 1% weight percent and are added to nickel–iron alloy powder. The elements are alloyed, and build-up welded by plasma-transferred-arcwelding. The resulting microstructure morphology of the welded wall structure and the machining properties are then determined. It can be shown that titanium has a significant effect on the structural morphology of the welded layers, as well as on the machining.</abstract>
    <parentTitle language="eng">2nd International Conference on Advanced Joining Processes (AJP 2021)</parentTitle>
    <identifier type="isbn">978-3-030-95463-5</identifier>
    <identifier type="doi">10.1007/978-3-030-95463-5_6</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <author>A. Eissel</author>
    <author>Lorenz Engelking</author>
    <author>K. Treutler</author>
    <author>Dirk Schröpfer</author>
    <author>V. Wesling</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alloy modification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alloy 36</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Plasma-transferred arc welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic-assisted milling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surface integrity</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>53637</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">3. Sitzung des projektbegleitenden Ausschusses, 23.09.2021: „Herstellung beanspruchungsgerechter Oberflächen durch Kombination innovativer additiver und abtragender Fertigungsschritte an hochbelasteten Komponenten“</title>
    <abstract language="deu">Das DVS-Vorhaben 01.3211 „Herstellung beanspruchungsgerechter Oberflächen durch Kombination innovativer additiver und abtragender Fertigungsschritte an hochbelasteten Komponenten“ ist ein Kooperationsprojekt der Bundesanstalt für Materialforschung und -prüfung (BAM) und dem Institut für Schweißtechnik und Trennende Fertigungsverfahren (ISAF) der Technischen Universität Clausthal. Das Übergeordnete Projektziel ist das Erlangen von Erkenntnissen für eine sichere und wirtschaftliche, kombinierte additive und abtragende Fertigung aus kostenintensiven Werkstoffen hochbelasteter Komponenten insbesondere für KMU. Dabei stehe die beiden Werkstoffe CoCr26Ni9Mo5W (2.4681) und FeNi36 (1.3912) im Fokus. Mittels Modifikation der Schweißzusätze sind homogen und isotrop ausgeprägte Werkstoffeigenschaften und eine Erhöhung der Prozessstabilität und Fertigungsfreiheitsgrade bei der additiven Fertigung erzielbar. Darüber hinaus wird der Einfluss nachfolgender abtragender Bearbeitungsschritte des ultraschallunterstützen und des konventionellen Fräsprozesses untersucht. Im Laufe der Sitzung des projektbegleitenden Ausschusses (PbA) wurde der aktuelle Bearbeitungsstand sowie der Zeitplan vorgestellt. Darüber hinaus wurde mit dem PbA über die bereits erzielten Ergebnisse diskutiert. Abschließend wurde ein kurzer Ausblick über die zeitnah beginnenden Arbeiten beider Forschungseinrichtungen sowie ein Überblick über die vorhabenbezogenen Aufwendungen der Wirtschaft und des Ergebnistransfers in die Wirtschaft gegeben.</abstract>
    <enrichment key="eventName">3. Sitzung des Projektbegleitenden Ausschusses</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">23.09.2021</enrichment>
    <enrichment key="eventEnd">23.09.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Lorenz Engelking</author>
    <author>A. Eissel</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Projektbegleitender Ausschuss</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschallunterstütztes Fräsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Additive Fertigung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schweißzusatzmodifikation</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>61929</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Influence of build-up height and heat input on distortion and residual stresses in additive repair and modification of multi-material composites using DED-Arc</title>
    <abstract language="eng">In hybrid additive manufacturing, components or semi-finished products manufactured by conventional primary forming are enhanced or modified by additive manufactured structures. The integration of additive manufacturing steps into existing production routes opens up significant economic and technical potential. However, systematic investigations focusing on the critical transition area between the specific properties of the substrate (like high-strength) and the additively manufactured component, made of specific filler material, are still lacking. Residual stresses heighten the risk of cold cracking, excessive distortion and a reduction in yield stress. This is particularly evident in sensitive transition areas, resulting from a complex interaction among the material used, process conditions, and component design. This risk can be minimized by an optimized layer structure in combination with suitable process parameters. The focus of the present study was to determine the influence of deposition strategy on t</abstract>
    <enrichment key="eventName">International Materials Science and Engineering Congress - MSE 2024</enrichment>
    <enrichment key="eventPlace">Darmstadt, Germany</enrichment>
    <enrichment key="eventStart">02.04.2024</enrichment>
    <enrichment key="eventEnd">04.04.2024</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>J. Hensel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>DED-Arc</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Residual stress</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Heat control</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
  </doc>
  <doc>
    <id>59307</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Residual stress formation in DED-arc manufactured high strength steel components</title>
    <abstract language="eng">Additive manufacturing (AM) processes enable the efficient production of advanced constructions. New developments in topology optimization are leading to weight-optimized designs of increasing complexity. Direct energy deposition processes (DED) such as wire and arc-based additive manufacturing are an important method of additive manufacturing. The wire filler metals enable a wide range of materials, while the arc process provides a high deposition rate compared to laser and powder-based processes. Combined with the use of high-strength steels, the thickness of walls or components can be significantly reduced in the context of lightweight construction, which results in significant savings in energy, costs, time and resources. Suitable high-strength steel filler metals are commercially available for DED-arc AM processes. However, guidelines and quantitative knowledge about welding stresses and cold cracking issues during component production and service are lacking. This limits the industrial application considerably. In a joint project of BAM and Chemnitz University of Technology, the main influences and complex interactions of material, production process, design and processing steps on the residual stress level are investigated. The aim is to develop processing recommendations and a cold cracking test for economical processing and stress-related design of high-strength steels with DED-arc. This study focuses on residual stress analysis by neutron diffraction (ND) and X-ray diffraction (XRD) on defined test specimens. The ND analysis were performed at the Paul Scherrer Institute- Villigen, Switzerland (PSI) and the XRD analysis at BAM. The study shows a quantitative and qualitative comparison of the residual stress magnitudes and distribution between the component bulk (ND) and surface (XRD) analyses. The ND analysis reveals that in DED-arc AM walls the residual stresses dominate in the direction of welding and are negligibly small in each case transverse to the direction of welding. The topology of the analyzed residual stresses shows almost identical residual stress maps compared to XRD. In addition, the residual stresses are significantly influenced by the solid phase transformation of the material due to low cooling times and less post heat treatment cycles of following AM layers  in the area of the top layer.</abstract>
    <enrichment key="eventName">IIW Intermediate Meeting C-II/CIX</enrichment>
    <enrichment key="eventPlace">Munich, Germany</enrichment>
    <enrichment key="eventStart">06.03.2023</enrichment>
    <enrichment key="eventEnd">08.03.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Dirk Schröpfer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Additive manufacturing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High strength steel</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Residual stress</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
  </doc>
  <doc>
    <id>51584</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Projektvorstellung FOSTA P1311: Beanspruchungsgerechte Reparatur von Schweiß-verbindungen bei der Fertigung von Bauteilen aushochfesten Feinkornbaustählen</title>
    <abstract language="deu">Bei der Montage von Stahlkonstruktionen kommt es trotz anforderungsgerechter schweißtechnischer Fertigung vereinzelt zur Detektion von unzulässigen Unregelmäßigkeiten im Schweißbereich. Die Verarbeitungsregelwerke empfehlen das lokale thermische Ausfugen betroffener Bereiche und erneutes Schweißen, geben aber aufgrund fehlender wissenschaftlich fundierter Untersuchungen kaum Informationen zu adäquaten Reparaturkonzepten. Dies betrifft insbesondere die Berücksichtigung und Optimierung resultierender schweißbedingter Beanspruchungen durch hohe Schrumpfbehinderungen der Ausfugenuten sowie der Gefügedegradation angrenzender Bereiche durch das Ausfugen und erneute Schweißen. Gerade bei hochfesten Stahlgüten ergeben sich dadurch häufig reduzierte mechanische Eigenschaften und zusätzliche schweißbedingte Beanspruchungen sowie erneut auftretende Nahtdefekte.&#13;
Deshalb sind für das Forschungsvorhaben systematische bauteilrelevante Untersuchungen der schweißbedingten Beanspruchungen und Gefügeveränderungen reparierter Schweißnähte in Abhängigkeit von der Schrumpfbehinderung und Wärmeführung beim Schweißen und Ausfugen sowie von der Reparaturzyklenanzahl geplant, mit dem Ziel Empfehlungen für beanspruchungs- und werkstoffgerechte Reparaturkonzepte abzuleiten. Hierfür sind gerade Analysen an hochfesten Stahlgüten S500 für den Offshore-Bereich und S960QL für den Mobilkranbau interessant, die zur Errichtung und Fertigung hocheffizienter Konstruktionen wie Windenergieanlagen notwendig sind. Die Erkenntnisse bieten eine Grundlage für entsprechende Normen und Regelwerke. Damit können letztlich Schäden und zumeist teure Nacharbeiten verhindert und eine verbesserte Ausnutzung des hohen Festigkeitspotentials hochfester Stähle erreicht werden. Gerade auch KMU können mit Blick auf die Kosten für Fertigung, Schweißarbeit und Material von den Erkenntnissen beim Einsatz hochfester Stähle, die für eine effiziente Realisierung der Energiewende in Deutschland notwendig sind, profitieren</abstract>
    <enrichment key="eventName">NA 092-00-05 GA (DVS AG Q 4/Q 4.1)</enrichment>
    <enrichment key="eventPlace">Hamm, Germany</enrichment>
    <enrichment key="eventStart">04.03.2020</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>Dirk Schröpfer</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Reparatur</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eigenspannungen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Wärmeführung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochfester Feinkornbaustahl</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Gefügedegradation</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>56739</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>11</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>2022</volume>
    <type>article</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Heat control and design‑related effects on the properties and welding stresses in WAAM components of high‑strength structural steels</title>
    <abstract language="eng">Commercial high-strength fller metals for wire arc additive manufacturing (WAAM) are already available. However, widespread industrial use is currently limited due to a lack of quantitative knowledge and guidelines regarding welding stresses and component safety during manufacture and operation for WAAM structures. In a joint research project, the process- and material-related as well as design infuences associated with residual stress formation and the risk of cold cracking are being investigated. For this purpose, reference specimens are welded fully automated with defned dimensions and systematic variation of heat control using a special, high-strength WAAM fller metal (yield strength&gt;790 MPa). Heat control is varied by means of heat input (200–650 kJ/m) and interlayer temperature (100–300 °C). The ∆t8/5 cooling times correspond with the recommendations of fller metal producers (approx. 5–20 s). For this purpose, additional thermo-physical forming simulations using a dilatometer allowed the complex heat cycles to be reproduced and the resulting ultimate tensile strength of the weld metal to be determined. Welding parameters and AM geometry are correlated with the resulting microstructure, hardness, and residual stress state. High heat input leads to a lower tensile stress in the component and may cause unfavorable microstructure and mechanical properties. However, a sufciently low interlayer temperature is likely to be suitable for obtaining adequate properties at a reduced tensile stress level when welding with high heat input. The component design afects heat dissipation conditions and the intensity of restraint during welding and has a signifcant infuence on the residual stress. These complex interactions are analyzed within this investigation. The aim is to provide easily applicable processing recommendations and standard specifcations for an economical, appropriate, and crack-safe WAAM of high-strength steels.</abstract>
    <parentTitle language="eng">Welding in the world</parentTitle>
    <identifier type="doi">10.1007/s40194-022-01450-x</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-567397</identifier>
    <identifier type="issn">1878-6669</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">18.01.2023</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>R. Scharf-Wildenhain</author>
    <author>A. Hälsig</author>
    <author>J. Hensel</author>
    <author>Karsten Wandtke</author>
    <author>Dirk Schröpfer</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>GMA welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Additive manufacturing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Residual stresses</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High-strength steel</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cold cracking safety</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Heat control</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wind energy</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/56739/s40194-022-01450-x.pdf</file>
  </doc>
  <doc>
    <id>57177</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>9</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Heidelberg</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Alloy modification for additive manufactured Ni alloy components—part I: effect on microstructure and hardness of Invar alloy</title>
    <abstract language="eng">Alloy 36 (1.3912), also known as “Invar,” is an alloy with 36% nickel. The alloy has a remarkably low thermal expansion coefficient in certain temperature ranges. This peculiarity is called the invar effect, which was discovered in 1896 by the Swiss physicist Charles Édouard Guillaume. Therefore, it is used in applications in which dimensional stability is critical, such as molding tools for composite materials in aerospace, automotive applications, or liquified natural gas (LNG) cargo tanks. Moreover, increasingly complex structures and the optimization of resource efficiency also require additive manufacturing steps for the production or repair of components. Additively manufactured components have a heterogeneous microstructure and anisotropic mechanical properties. In addition, the manufactured components require subsequent machining surface finishing, like finish milling, to achieve their final contour. Nickel iron alloys are difficult to machine. Additionally, inhomogeneous microstructure may lead to unstable cutting forces and conditions. In part I of this investigation, the initial alloy 36 is modified with the elements Ti, Zr, and Hf up to a maximum of 0.33 wt.-%. The influence of the modification elements on the microstructure as well as on the hardness of the AM components is examined. Furthermore, one modification is applied to metal arc welding process and investigated. Part II focuses on the effect of the alloy modifications on machinability as well as on the surface integrity of plasma-transferred-arc-welded (PTA) and finish milled invar components.</abstract>
    <parentTitle language="eng">Welding in the World</parentTitle>
    <identifier type="doi">10.1007/s40194-023-01510-w</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-571777</identifier>
    <identifier type="issn">0043-2288</identifier>
    <enrichment key="eventName">75th IIW Annual Assembly</enrichment>
    <enrichment key="eventPlace">Tokyo, Japan</enrichment>
    <enrichment key="eventStart">17.07.2022</enrichment>
    <enrichment key="eventEnd">22.07.2022</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">03.04.2023</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>A. Eissel</author>
    <author>Lorenz Engelking</author>
    <author>R. Gustus</author>
    <author>K. Treutler</author>
    <author>V. Wesling</author>
    <author>Dirk Schröpfer</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alloy modification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alloy 36</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Plasma-transferred arc welding</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/57177/Alloy modification for additive manufactured Ni alloy components_part I.pdf</file>
  </doc>
  <doc>
    <id>57524</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>4191</pageFirst>
    <pageLast>4198</pageLast>
    <pageNumber/>
    <edition/>
    <issue>9</issue>
    <volume>126</volume>
    <type>article</type>
    <publisherName>Springer Nature</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Optimisation of surface residual stresses using ultrasonic‑assisted milling for wire‑arc additive manufactured Ni alloy components</title>
    <abstract language="eng">Nickel alloys are cost intensive materials and generally classified as difficult-to-cut material. However, machining of these materials is needed especially in case of alloy 36 (1.3912), which is commonly used in mould construction for the production of fibre-reinforced composites. With regard to repair, modification and manufacturing of such components, additive manufacturing offers significant economic advantages. Nevertheless, subsequent machining steps are needed to achieve the final component contour and defined surface conditions. Dependent on the material and machining process conditions, detrimental tensile residual stresses may be the result on the machined surface, having negative impact on the component performance and safety. In this investigation, machining experiments were carried out on wire arc additive manufactured components made of alloy 36, varying the cutting speed and the feed rate. In addition, the conventional milling process (CM) was compared with a modern, hybrid machining process, the ultrasonic-assisted milling (US). The cutting forces and the surface-near residual stresses were analysed using X-ray diffraction. A significant improvement of the machinability as well as the surface integrity by using the ultrasonic assistance was observed, especially at low cutting speeds. The CM induced mainly tensile residual stresses, the US mainly compressive residual stresses.</abstract>
    <parentTitle language="eng">The International Journal of Advanced Manufacturing Technology</parentTitle>
    <identifier type="issn">1433-3015</identifier>
    <identifier type="doi">10.1007/s00170-023-11326-z</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-575246</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">24.05.2023</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Lorenz Engelking</author>
    <author>A. Eissel</author>
    <author>Dirk Schröpfer</author>
    <author>K. Treutler</author>
    <author>Thomas Kannengießer</author>
    <author>V. Wesling</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surface integrity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic-assisted milling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Additive manufacturing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ni alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alloy 36</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/57524/s00170-023-11326-z.pdf</file>
  </doc>
  <doc>
    <id>56629</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>793</pageFirst>
    <pageLast>798</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>108</volume>
    <type>article</type>
    <publisherName>Elsevier B.V.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Tool development for hybrid finishing milling of iron aluminides</title>
    <abstract language="eng">The importance of high-temperature materials made of iron aluminides (FeAl) has been increasing in light weight applications, e.g., airplane turbines, due to the high material’s specific strength. However, the highly economic production by means of permanent mold casting involves special microstructures for Fe26Al4Mo0.5Ti1B alloy components leading to difficult machinability for subsequent finishing milling and low surface qualities. Major effects of tool and machining parameter variation incorporating ultrasonic assistance on the milling process and surface integrity are shown. Loads for tool and component surface are significantly adjustable to enable an economic process chain regarding the surface integrity of safety-relevant components.</abstract>
    <parentTitle language="eng">Procedia CIRP</parentTitle>
    <identifier type="doi">10.1016/j.procir.2022.03.123</identifier>
    <identifier type="issn">2212-8271</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-566294</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International</licence>
    <author>Julien Witte</author>
    <author>Dirk Schröpfer</author>
    <author>M. Hamacher</author>
    <author>H. Michels</author>
    <author>C. Hamm</author>
    <author>M. Appelt</author>
    <author>Andreas Börner</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic-assisted milling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Iron aluminide</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surface integrity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Tool wear</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/56629/J.Witte_Tool development for hybrid finishing milling of iron aluminides.pdf</file>
  </doc>
  <doc>
    <id>55582</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>1</pageFirst>
    <pageLast>2</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>other</type>
    <publisherName>Bundesanstalt für Materialforschung und -prüfung (BAM)</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Kurzdarstellung der Projektergebnisse: Beanspruchungsgerechte Reparatur von Schweißverbindungen bei der Fertigung von Bauteilen aus hochfesten Feinkornbaustählen</title>
    <abstract language="deu">Bei der Montage von Stahlkonstruktionen kommt es trotz anforderungsgerechter schweißtechnischer Fertigung vereinzelt zur Detektion von unzulässigen Unregelmäßigkeiten im Schweißbereich.&#13;
&#13;
In einem Forschungsprojekt (FOSTA P1311) wurden Untersuchungen durchgeführt und Kenntnisse erarbeitet, um mittelfristig vor allem KMU beanspruchungsgerechte Reparaturkonzepte zur Verfügung zu stellen. Damit können letztlich Schäden und zumeist teure Nacharbeiten verhindert und eine verbesserte Ausnutzung des hohen Festigkeitspotentials hochfester Stähle erreicht werden. Gerade KMU können mit Blick auf die Kosten für Fertigung, Schweißarbeit und Material von den Erkenntnissen beim Einsatz hochfester Stähle, die für eine effiziente Realisierung der Energiewende in Deutschland notwendig sind, profitieren.</abstract>
    <identifier type="urn">urn:nbn:de:kobv:b43-555822</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Dirk Schröpfer</author>
    <author>Amadeus Becker</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>MAG-Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochfester Stahl</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eigenspannungen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Thermisches Ausfugen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Reparaturschweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Gefügedegradation</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Eigenverlag BAM</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Arbeitspapiere der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/55582/Kurzdarstellung_der_Ergebnisse_P1311_2022.pdf</file>
  </doc>
  <doc>
    <id>59351</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>11</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>14</volume>
    <type>article</type>
    <publisherName>MDPI</publisherName>
    <publisherPlace>Basel</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Residual Stress Evolution during Slot Milling for Repair Welding and Wire Arc Additive Manufacturing of High-Strength Steel Components</title>
    <abstract language="eng">High-strength steels offer potential for weight optimization due to reduced wall thicknesses in modern constructions. Additive manufacturing processes such as Wire Arc Additive Manufacturing (WAAM) enable the resource-efficient production of structures. In the case of defects occurring in weld seams orWAAM components due to unstable process conditions, the economical solution is local gouging or machining and repair welding. It is important to understand the effects of machining steps on the multiaxial stress state in conjunction with the design-related shrinkage restraints. Research into how welding and slot milling of welds andWAAM structures affects residual stresses is still lacking. For this reason, component-related investigations with high-strength steels with yield strengths ≥790 MPa are carried out in our research. In-situ digital image correlation (DIC) and ex-situ X-ray diffraction (XRD) were used to analyze the stresses and strains induced on specimens during and after milling. The systematic analyses revealed a significant interaction of the stiffness and microstructure of the specimens with the initial residual stresses induced by welding. Subsequent repair welds can result in significantly higher residual stresses.</abstract>
    <parentTitle language="eng">Welding of Modern High-Strength Steels — Correlations between Process, Structure and Joint Properties</parentTitle>
    <identifier type="doi">10.3390/met14010082</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-593515</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">12.02.2024</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Karsten Wandtke</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High strength steels</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Additive manufacturing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Residual stress</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Repair welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ditigtal image correlation</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
    <collection role="themenfelder" number="">Leichtbau</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/59351/metals-14-00082-v2.pdf</file>
  </doc>
  <doc>
    <id>58219</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>1</pageFirst>
    <pageLast>2</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>other</type>
    <publisherName>Bundesanstalt für Materialforschung und -prüfung (BAM)</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Fertigungsbedingte Beanspruchungen und Kaltrisssicherheit in generativ gefertigten Bauteilen  aus hochfesten Feinkornbaustählen - Kurzdarstellung der Projektergebnisse, FOSTA P1380</title>
    <abstract language="deu">Die Verwendung hochfester Feinkornbaustähle hat für viele Anwendungen des Stahlbaus ein großes Potenzial für gewichtsoptimierte, effiziente Strukturen mit ho-her mechanischer Beanspruchbarkeit. Weitere Zugewinne an Effizienz sind durch generative Fertigungsschritte sowie bionische Bauweisen erzielbar. Hierzu stehen bereits kommerzielle hochfeste drahtförmige Zusatzwerkstoffe für formgebendes MSG-Schweißen zur Verfügung. Dem Einsatz stehen noch fehlende quantitative Aussagen zu den fertigungsbedingten Beanspruchungen und der Bauteilsicherheit während Herstellung und Betrieb im Wege. Dies betrifft insbesondere prozess- sowie materialbedingte Einflüsse und die konstruktive Schrumpfbehinderung verbunden mit der Ausbildung hoher Zugeigenspannungen und damit zusammenhängenden Kaltrissbildung.&#13;
&#13;
Hierfür wurden im Projekt detaillierte und anwenderbezogene Kenntnisse zu den komplexen Wechselwirkungen zwischen Schweißprozess und Wärmeführung während der Fertigung, der metallurgischen Vorgänge und insbesondere der vorliegenden konstruktiven Einflüsse auf die entstehenden Eigenspannungen erarbeitet, um ein frühzeitiges Bauteilversagen aufgrund eines hohen fertigungsbedingten Beanspruchungsniveaus bis hin zu einer Rissbildung während der Fertigung sicher zu vermeiden. Gleichzeitig wurden die Einflüsse auf die mechanisch-technologischen Gütewerte systematisch analysiert. Zudem wurden die Auswirkungen trennender Verfahren durch Entfernen der Substratplatte sowie durch die spanende Bearbeitung der Vorformlinge zu Endbauteilgeometrien geklärt, da diese unmittelbar den Eigenspannungszustand beeinflussen und deutlichen Verzug der Bauteile auslösen.&#13;
&#13;
Für das generative Schweißen konnten Verarbeitungsempfehlungen sowie Normenvorgaben erarbeitet werden. Dies hilft insbesondere KMU eine wirtschaftliche, beanspruchungsgerechte und risssichere generative Fertigung von Bauteilen aus hochfesten Feinkornbaustählen zu ermöglichen.</abstract>
    <identifier type="urn">urn:nbn:de:kobv:b43-582198</identifier>
    <note>Das IGF-Vorhaben IGF-Nr. 21162 BG (P 1380) "Fertigungsbedingte Beanspruchungen und Kaltrisssicherheit in generativ gefertigten Bauteilen aus hochfesten Feinkornbaustählen" der Forschungsvereinigung Stahlanwendung e. V. wurde über die AiF im Rahmen des Programms zur Förderung der Industriellen Gemeinschaftsforschung (IGF) vom Bundesministerium für Wirtschaft und Klimaschutz aufgrund eines Beschlusses des Deutschen Bundestages gefördert.</note>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Karsten Wandtke</author>
    <author>Dirk Schröpfer</author>
    <author>R. Scharf-Wildenhain</author>
    <author>A. Hälsig</author>
    <author>Arne Kromm</author>
    <author>Thomas Kannengießer</author>
    <author>J. Hensel</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>MAG-Schweißen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Additive Fertigung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Eigenspannungen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Kaltrisssicherheit</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Hochfester Stahl</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Eigenverlag BAM</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Arbeitspapiere der BAM</collection>
    <collection role="themenfelder" number="">Additive Fertigung</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/58219/Kurzdarstellung_der_Ergebnisse_P1380_20230908.pdf</file>
  </doc>
  <doc>
    <id>59521</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>13</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Springer Science and Business Media LLC</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Stresses in repair welding of high-strength steels—part 1: restraint and cold cracking risk</title>
    <abstract language="eng">AbstractThe sustainable and resource-efficient production of wind energy plants requires the use of modern high-strength fine-grain structural steels. This applies to both foundation and erection structures, like mobile or ship cranes. During the assembly of steel structures, unacceptable defects can occasionally be found in the weld area. In most cases, the economical solution would be local thermal gouging of the affected areas and re-welding. Due to the high shrinkage restraint of the joint groove in the overall structure, the superposition of global and local welding-induced stresses may lead to crack formation and component failure, particularly in interaction with the degradation of the microstructure and mechanical properties of high-strength steels during the repair process. However, manufacturers hardly have any information about these issues and there is a lack of recommendations and guidelines to take these safety-relevant aspects into account in adequate repair concepts. The aim of this research is to derive recommendations for repair concepts appropriate to the stresses and materials involved providing a basis for standards and guidelines to avoid cold cracking, damage and expensive reworking especially for high-strength steels. Part 1 of this study involves systematic investigations of influences of shrinkage restraint during repair welding of two high-strength steels S500MLO for offshore application and S960QL for mobile crane structures. The quantification of the shrinkage restraint of repair weld joints was achieved by means of experimental and numerical restraint intensity analysis. In welding experiments with self-restrained slot specimens, restraint intensity and introduction of hydrogen via the welding arc using anti spatter spray were varied systematically to analyse the effect on welding result, residual stresses and cold cracking. It could be shown that increasing restraint intensities result in significantly higher transverse residual stress levels. In the case of hydrogen introduction S500MLO showed no cold cracking independent of the restraint conditions. However, S960QL was found to be considerably cold cracking sensitive if hydrogen is introduced. With increasing restraint intensity length and number of cold cracks increases significantly. Part 2 [1] of this study is focussed on microstructure and residual stresses due to gouging and stress optimization via adequate heat control parameters in repair welding.</abstract>
    <parentTitle language="eng">Welding in the World</parentTitle>
    <identifier type="doi">10.1007/s40194-024-01691-y</identifier>
    <identifier type="issn">0043-2288</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-595212</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="opus_import_data">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,1,26]],"date-time":"2024-01-26T00:13:07Z","timestamp":1706227987165},"reference-count":27,"publisher":"Springer Science and Business Media LLC","license":[{"start":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T00:00:00Z","timestamp":1706140800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T00:00:00Z","timestamp":1706140800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/100021130","name":"Bundesministerium f\u00fcr Wirtschaft und Klimaschutz","doi-asserted-by":"publisher","award":["IGF project No. 20162N (FOSTA P1311)"]},{"name":"Bundesanstalt f\u00fcr Materialforschung und -pr\u00fcfung (BAM)"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Weld World"],"abstract":"&lt;jats:title&gt;Abstract&lt;\/jats:title&gt;&lt;jats:p&gt;The sustainable and resource-efficient production of wind energy plants requires the use of modern high-strength fine-grain structural steels. This applies to both foundation and erection structures, like mobile or ship cranes. During the assembly of steel structures, unacceptable defects can occasionally be found in the weld area. In most cases, the economical solution would be local thermal gouging of the affected areas and re-welding. Due to the high shrinkage restraint of the joint groove in the overall structure, the superposition of global and local welding-induced stresses may lead to crack formation and component failure, particularly in interaction with the degradation of the microstructure and mechanical properties of high-strength steels during the repair process. However, manufacturers hardly have any information about these issues and there is a lack of recommendations and guidelines to take these safety-relevant aspects into account in adequate repair concepts. The aim of this research is to derive recommendations for repair concepts appropriate to the stresses and materials involved providing a basis for standards and guidelines to avoid cold cracking, damage and expensive reworking especially for high-strength steels. Part 1 of this study involves systematic investigations of influences of shrinkage restraint during repair welding of two high-strength steels S500MLO for offshore application and S960QL for mobile crane structures. The quantification of the shrinkage restraint of repair weld joints was achieved by means of experimental and numerical restraint intensity analysis. In welding experiments with self-restrained slot specimens, restraint intensity and introduction of hydrogen via the welding arc using anti spatter spray were varied systematically to analyse the effect on welding result, residual stresses and cold cracking. It could be shown that increasing restraint intensities result in significantly higher transverse residual stress levels. In the case of hydrogen introduction S500MLO showed no cold cracking independent of the restraint conditions. However, S960QL was found to be considerably cold cracking sensitive if hydrogen is introduced. With increasing restraint intensity length and number of cold cracks increases significantly. Part 2 [1] of this study is focussed on microstructure and residual stresses due to gouging and stress optimization via adequate heat control parameters in repair welding.&lt;\/jats:p&gt;","DOI":"10.1007\/s40194-024-01691-y","type":"journal-article","created":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T07:02:40Z","timestamp":1706166160000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Stresses in repair welding of high-strength steels\u2014part 1: restraint and cold cracking risk"],"prefix":"10.1007","author":[{"ORCID":"http:\/\/orcid.org\/0000-0003-2226-9337","authenticated-orcid":false,"given":"D.","family":"Schroepfer","sequence":"first","affiliation":[]},{"given":"J.","family":"Witte","sequence":"additional","affiliation":[]},{"given":"A.","family":"Kromm","sequence":"additional","affiliation":[]},{"given":"T.","family":"Kannengiesser","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2024,1,25]]},"reference":[{"key":"1691_CR1","unstructured":"Schroepfer D, Witte J, Kromm A, Kannengiesser T (2023) Stresses in repair welding of high-strength steels, Part 2: Heat Control and Stress Optimization (IIW Doc. II-2264-2023 (II-A-427-2023)). Welding in the World (for submission)"},{"issue":"13","key":"1691_CR2","doi-asserted-by":"publisher","first-page":"4637","DOI":"10.3390\/ma15134637","volume":"15","author":"J Moravec","year":"2022","unstructured":"Moravec J, Mi\u010dian M, M\u00e1lek M, \u0160vec M (2022) Determination of CCT diagram by dilatometry analysis of high-strength low-alloy S960MC steel. Materials 15(13):4637. https:\/\/doi.org\/10.3390\/ma15134637","journal-title":"Materials"},{"key":"1691_CR3","doi-asserted-by":"publisher","first-page":"20","DOI":"10.1016\/j.jcsr.2011.09.007","volume":"72","author":"J Jiang","year":"2012","unstructured":"Jiang J, Zhao M (2012) Influence of residual stress on stress concentration factor for high strength steel welded joints. J Constr Steel Res 72:20\u201328. https:\/\/doi.org\/10.1016\/j.jcsr.2011.09.007","journal-title":"J Constr Steel Res"},{"key":"1691_CR4","doi-asserted-by":"publisher","volume-title":"ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, 2020. V003T03A010","author":"M Braun","year":"2020","unstructured":"Braun M, Milakovi\u0107 A-S, Ehlers S, Kahl A, Willems T, Seidel M, Fischer C (2020) Sub-zero temperature fatigue strength of butt-welded normal and high-strength steel joints for ships and offshore structures in arctic regions. In: ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering, 2020. V003T03A010. https:\/\/doi.org\/10.1115\/omae2020-18892","DOI":"10.1115\/omae2020-18892"},{"key":"1691_CR5","volume-title":"The Twenty-third International Offshore and Polar Engineering Conference, 2013. ISOPE-I-13-620","author":"Y Kitagawa","year":"2013","unstructured":"Kitagawa Y, Han P, Kawasaki H (2013) Development of high-strength and good-toughness welding consumables for offshore structures. In: The twenty-third international offshore and polar engineering conference, 2013. ISOPE-I-13-620"},{"key":"1691_CR6","doi-asserted-by":"publisher","first-page":"229","DOI":"10.1016\/j.jmatprotec.2013.09.002","volume":"214","author":"C Zhang","year":"2014","unstructured":"Zhang C, Lu P, Hu X (2014) Residual stress and softening in welded high-strength low-alloy steel with a buffering layer. J Mater Process Technol 214:229\u2013237. https:\/\/doi.org\/10.1016\/j.jmatprotec.2013.09.002","journal-title":"J Mater Process Technol"},{"key":"1691_CR7","unstructured":"Kannengiesser T, Schroepfer D (2017) Key aspects of component welding applying higher-strength fine-grained structural steels. In: Conference of Welding Science and Engineering (WSE 2017), Shandong University, Jinan, China"},{"key":"1691_CR8","doi-asserted-by":"publisher","first-page":"459","DOI":"10.1007\/s40194-018-0566-x","volume":"62","author":"D Schroepfer","year":"2018","unstructured":"Schroepfer D, Kromm A, Kannengiesser T (2018) Load analyses of welded high-strength steel structures using image correlation and diffraction techniques. Weld World 62:459\u2013469. https:\/\/doi.org\/10.1007\/s40194-018-0566-x","journal-title":"Weld World"},{"key":"1691_CR9","unstructured":"European Standard EN 1011-2 (2001) Welding - Recommendation for welding of metallic materials - Part 2: Arc welding of ferritic steels."},{"key":"1691_CR10","doi-asserted-by":"publisher","first-page":"757","DOI":"10.1007\/s40194-015-0257-9","volume":"59","author":"R Schasse","year":"2015","unstructured":"Schasse R, Kannengiesser T, Kromm A, Mente T (2015) Residual stresses in repair welds of high-strength low-alloy steels. Weld World 59:757\u2013765. https:\/\/doi.org\/10.1007\/s40194-015-0257-9","journal-title":"Weld World"},{"key":"1691_CR11","unstructured":"Guyot S, Dubois JM, Bryla P (2009) Welding reparation on thermo-mechanical HSS. In: Conference on high strenght steels for hydropower plants, Japan Electric Power Civil Engineering Association, Takasaki"},{"key":"1691_CR12","doi-asserted-by":"publisher","first-page":"211","DOI":"10.1016\/j.nucengdes.2012.01.021","volume":"246","author":"W Jiang","year":"2012","unstructured":"Jiang W, Xu XP, Gong JM, Tu ST (2012) Influence of eepair length on residual stress in the repair weld of a clad plate. Nucl Eng Des 246:211\u2013219. https:\/\/doi.org\/10.1016\/j.nucengdes.2012.01.021","journal-title":"Nucl Eng Des"},{"key":"1691_CR13","doi-asserted-by":"publisher","first-page":"351","DOI":"10.1007\/s40194-018-0554-1","volume":"62","author":"P Dong","year":"2018","unstructured":"Dong P (2018) On repair weld residual stresses and significance to structural integrity. Weld World 62:351\u2013362. https:\/\/doi.org\/10.1007\/s40194-018-0554-1","journal-title":"Weld World"},{"key":"1691_CR14","doi-asserted-by":"publisher","first-page":"205","DOI":"10.21741\/9781945291173-35","volume-title":"Proceedings, Residual Stresses 2016: ICRS-10. Materials Research Forum","author":"D Schroepfer","year":"2017","unstructured":"Schroepfer D, Flohr K, Kromm A, Kannengiesser T (2017) Multi-axial analyses of welding stresses in high-strength steel welds. In: Proceedings, Residual Stresses 2016: ICRS-10. Materials Research Forum, pp 205\u2013210. https:\/\/doi.org\/10.21741\/9781945291173-35"},{"key":"1691_CR15","doi-asserted-by":"crossref","unstructured":"Satoh K, Nakajima H, Toyosada M (1972) Restraint intensity of weld joints in the structural members consisting of plates and stiffeners, IIW-Doc X-660-72.","DOI":"10.2534\/jjasnaoe1968.1972.132_371"},{"key":"1691_CR16","first-page":"133","volume":"11","author":"K Satoh","year":"1973","unstructured":"Satoh K, Ueda Y, Kihara H (1973) Recent trends of research into restraint stresses and strains in relation to weld cracking. Weld World 11:133\u2013156","journal-title":"Weld World"},{"key":"1691_CR17","volume-title":"ASM Handbook; Vol. 6: Welding, brazing and soldering","author":"K Masubuchi","year":"1993","unstructured":"Masubuchi K (1993) Residual stresses and distortion. In: ASM Handbook; Vol. 6: Welding, brazing and soldering. ASM International"},{"issue":"4","key":"1691_CR18","doi-asserted-by":"publisher","first-page":"574","DOI":"10.1520\/MPC20170103","volume":"7","author":"A Kromm","year":"2018","unstructured":"Kromm A, Lausch T, Schroepfer D, Dixneit J, Hannemann A, Kannengiesser T (2018) From the field to the lab: real scale assessment of stresses in welded components. Mater Perform Charact 7(4):574\u2013593. https:\/\/doi.org\/10.1520\/MPC20170103","journal-title":"Mater Perform Charact"},{"issue":"3","key":"1691_CR19","doi-asserted-by":"publisher","first-page":"647","DOI":"10.1007\/s40194-018-00691-z","volume":"63","author":"D Schroepfer","year":"2018","unstructured":"Schroepfer D, Kromm A, Schaupp T, Kannengiesser T (2018) Welding stress control in high-strength steel components using adapted heat control concepts. Weld World 63(3):647\u2013661. https:\/\/doi.org\/10.1007\/s40194-018-00691-z","journal-title":"Weld World"},{"issue":"17","key":"1691_CR20","doi-asserted-by":"publisher","first-page":"2700","DOI":"10.3390\/ma12172700","volume":"12","author":"J Sun","year":"2019","unstructured":"Sun J, Hensel J, Nitschke-Pagel T, Dilger K (2019) Influence of restraint conditions on welding residual stresses in H-type cracking test specimens. Materials 12(17):2700. https:\/\/doi.org\/10.3390\/ma12172700","journal-title":"Materials"},{"key":"1691_CR21","doi-asserted-by":"publisher","volume-title":"Trends in Welding Research: Proceedings of the 8th International Conference, Pine Mountain, USA","author":"C Schwenk","year":"2009","unstructured":"Schwenk C, Kannengiesser T, Rethmeier M (2009) Restraint conditions and welding residual stresses in self-restrained cold cracking tests. In: Trends in Welding Research: Proceedings of the 8th International Conference, Pine Mountain, USA. https:\/\/doi.org\/10.1361\/cp2008twr766","DOI":"10.1361\/cp2008twr766"},{"issue":"4","key":"1691_CR22","doi-asserted-by":"publisher","first-page":"355","DOI":"10.1179\/026708301101509980","volume":"17","author":"PJ Withers","year":"2001","unstructured":"Withers PJ, Bhadeshia HKDH (2001) Overview - Residual stress part 1 - Measurement techniques. Mater Sci Technol 17(4):355\u2013365. https:\/\/doi.org\/10.1179\/026708301101509980","journal-title":"Mater Sci Technol"},{"key":"1691_CR23","unstructured":"Nitschke-Pagel T, Wohlfahrt H (1991) The generation of residual stresses due to joining processes. Residual stresses - measurement, calculation, evaluation."},{"issue":"4","key":"1691_CR24","doi-asserted-by":"publisher","first-page":"366","DOI":"10.1179\/026708301101510087","volume":"17","author":"PJ Withers","year":"2001","unstructured":"Withers PJ, Bhadeshia HKDH (2001) Overview - Residual stress part 2 - Nature and origins. Mater Sci Technol 17(4):366\u2013375. https:\/\/doi.org\/10.1179\/026708301101510087","journal-title":"Mater Sci Technol"},{"key":"1691_CR25","doi-asserted-by":"publisher","first-page":"423","DOI":"10.1007\/s40194-014-0127-x","volume":"58","author":"D Schroepfer","year":"2014","unstructured":"Schroepfer D, Kannengiesser T (2014) Correlating welding reaction stresses and weld process conditions for high-strength steel S960QL. Weld World 58:423\u2013432. https:\/\/doi.org\/10.1007\/s40194-014-0127-x","journal-title":"Weld World"},{"key":"1691_CR26","doi-asserted-by":"publisher","first-page":"91","DOI":"10.1007\/s40194-016-0394-9","volume":"61","author":"D Schroepfer","year":"2017","unstructured":"Schroepfer D, Kromm A, Kannengiesser T (2017) Engineering approach to assess residual stresses in welded components. Weld World 61:91\u2013106. https:\/\/doi.org\/10.1007\/s40194-016-0394-9","journal-title":"Weld World"},{"key":"1691_CR27","unstructured":"Wongpanya P, Boellinghaus T, Lothongkum G (2008) Ways to reduce the cold cracking risk in high strength structural steel welds. In: Safety and reliability of welded components in energy and processing industry - Proceedings of the IIW International Conference, Graz, Verlag der Technischen Universit\u00e4t"}],"container-title":["Welding in the World"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s40194-024-01691-y.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s40194-024-01691-y\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s40194-024-01691-y.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,1,25]],"date-time":"2024-01-25T07:06:15Z","timestamp":1706166375000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s40194-024-01691-y"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,1,25]]},"references-count":27,"alternative-id":["1691"],"URL":"http:\/\/dx.doi.org\/10.1007\/s40194-024-01691-y","relation":{},"ISSN":["0043-2288","1878-6669"],"issn-type":[{"value":"0043-2288","type":"print"},{"value":"1878-6669","type":"electronic"}],"subject":["Metals and Alloys","Mechanical Engineering","Mechanics of Materials"],"published":{"date-parts":[[2024,1,25]]},"assertion":[{"value":"13 November 2023","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"15 January 2024","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"25 January 2024","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare no competing interests.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}}]}}</enrichment>
    <enrichment key="local_crossrefDocumentType">journal-article</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">14.02.2024</enrichment>
    <enrichment key="PaperofMonth">1</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Dirk Schröpfer</author>
    <author>Julien Witte</author>
    <author>Arne Kromm</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Metals and Alloys</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mechanical Engineering</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mechanics of Materials</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/59521/s40194-024-01691-y.pdf</file>
  </doc>
  <doc>
    <id>60025</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>15</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Springer Nature</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Stresses in repair welding of high-strength steels—part 2: heat control and stress optimization</title>
    <abstract language="eng">In welding of high-strength steels, e.g. for foundations and erection structures of wind energy plants, unacceptable defects can occasionally be found in the weld area, which should be removed by thermal gouging and subsequent re-welding. High shrinkage restraint of repair welds may lead to crack formation and component failure, predominantly in interaction with degraded microstructures and mechanical properties due to repair cycles. This study aims for elaboration of recommendations for repair concepts appropriate to the stresses and materials involved to avoid cold cracking, damage and expensive reworking. In part 1 [1] of this study, systematic investigations of influences of shrinkage restraint on residual stresses and cold cracking risk during repair welding of two high-strength steels S500MLO for offshore application and S960QL for mobile crane structures were focussed. In this part 2, the microstructure, particularly hardness, and residual stresses due to gouging and influences of heat control parameters in repair welding are analysed. A clear reduction in residual stress after gouging can be observed, especially for the specimens with restrained transverse shrinkage. Gouging to a depth of approx. 2/3 of the seam height does not lead to a complete relaxation of the observed reaction forces. Particularly for the higher strength steel S960QL, there are pronounced areas influenced by the gouging process in which a degradation of the microstructure and properties should be assumed. Overall, the repair welds show a significant increase in the width of the weld and HAZ compared to the original weld, especially in the case of S960QL/G89. The repair welds show higher welding-induced stresses than the original welds, especially in the areas of the HAZ and the base metal close to the weld seam. This behaviour can be attributed overall to increased restraint conditions due to the remaining root weld or shorter gouge grooves. In good agreement with earlier investigations, the residual stresses transverse to the weld can be significantly reduced by upwardly limited working or interpass temperatures, and the reaction stresses resulting from high restraint conditions can be effectively counteracted. The influence of the heat input on the stress formation is low compared to the interpass temperature for both test materials.</abstract>
    <parentTitle language="eng">Welding in the World</parentTitle>
    <identifier type="doi">10.1007/s40194-024-01731-7</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-600259</identifier>
    <identifier type="issn">0043-2288</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">15.05.2024</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Dirk Schröpfer</author>
    <author>Julien Witte</author>
    <author>Arne Kromm</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Repair-welding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wind Energy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High-strength steels</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cold cracking</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Residual stresses</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore steels</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/60025/s40194-024-01731-7 (1).pdf</file>
  </doc>
  <doc>
    <id>62393</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>17</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Springer Science and Business Media LLC</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Effect of alloy modification on the wear protection coatings made of Ni- and Co-based materials and surface machinability via ultrasonic milling process</title>
    <abstract language="eng">AbstractWear-resistant coatings are required for highly efficient and economical steel components in equipment, process, and power plant engineering to withstand high corrosive, tribological, thermal, and mechanical stresses. Co-alloys are used as wear-resistant coatings for steel components, tailored to the specific application. The substitutability of Co alloys with Ni-based wear protection systems, in addition to price and supply uncertainties, is facilitated by the combination of innovative welding and machining processes such as ultrasonic-assisted milling. The aim of the study is to improve the machinability of two different hard-facing alloys while maintaining the same wear protection potential. Therefore, the wear-resistant alloys NiMoCrSi (Colmonoy C56) and CoMnCrSi (Tribaloy T400) were modified by the alloying additions Nb, Hf, and Ti and then applied to a carbon-manganese steel S355 using the plasma transfer arc (PTA) welding process. The influence of the alloying additions on the microstructure as</abstract>
    <parentTitle language="eng">The International Journal of Advanced Manufacturing Technology</parentTitle>
    <identifier type="doi">10.1007/s00170-024-14955-0</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-623931</identifier>
    <identifier type="issn">0268-3768</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="opus_import_data">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,1,9]],"date-time":"2025-01-09T17:40:16Z","timestamp":1736444416756,"version":"3.32.0"},"reference-count":40,"publisher":"Springer Science and Business Media LLC","license":[{"start":{"date-parts":[[2025,1,9]],"date-time":"2025-01-09T00:00:00Z","timestamp":1736380800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2025,1,9]],"date-time":"2025-01-09T00:00:00Z","timestamp":1736380800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/100021130","name":"Bundesministerium f\u00fcr Wirtschaft und Klimaschutz","doi-asserted-by":"publisher","award":["No. 21.959 (FOSTA P1550"],"id":[{"id":"10.13039\/100021130","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100018933","name":"Technische Universit\u00e4t Clausthal","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100018933","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Int J Adv Manuf Technol"],"abstract":"&lt;jats:title&gt;Abstract&lt;\/jats:title&gt;&lt;jats:p&gt;Wear-resistant coatings are required for highly efficient and economical steel components in equipment, process, and power plant engineering to withstand high corrosive, tribological, thermal, and mechanical stresses. Co-alloys are used as wear-resistant coatings for steel components, tailored to the specific application. The substitutability of Co alloys with Ni-based wear protection systems, in addition to price and supply uncertainties, is facilitated by the combination of innovative welding and machining processes such as ultrasonic-assisted milling. The aim of the study is to improve the machinability of two different hard-facing alloys while maintaining the same wear protection potential. Therefore, the wear-resistant alloys NiMoCrSi (Colmonoy C56) and CoMnCrSi (Tribaloy T400) were modified by the alloying additions Nb, Hf, and Ti and then applied to a carbon-manganese steel S355 using the plasma transfer arc (PTA) welding process. The influence of the alloying additions on the microstructure as well as on the formation of the hard phases of the build-up welds is compared. For example, the inclusion of the alloying element Nb results in the formation of a more refined hard phase and reduces the machining force required for C56 and T400. In most cases, the wear resistance potential has been maintained. In order to improve the machinability of the hard facings, the optimization of the demanding machining conditions by alloy modifications of the Co- and Ni-based alloys is also presented. It is shown that some of the modified alloys have significantly better machinability than the conventional alloy.&lt;\/jats:p&gt;","DOI":"10.1007\/s00170-024-14955-0","type":"journal-article","created":{"date-parts":[[2025,1,9]],"date-time":"2025-01-09T16:20:03Z","timestamp":1736439603000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effect of alloy modification on the wear protection coatings made of Ni- and Co-based materials and surface machinability via ultrasonic milling process"],"prefix":"10.1007","author":[{"given":"Maraike","family":"Willeke","sequence":"first","affiliation":[]},{"given":"Marcel","family":"Giese","sequence":"additional","affiliation":[]},{"given":"Swenja","family":"Lorenz","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4488-1500","authenticated-orcid":false,"given":"Kai","family":"Treutler","sequence":"additional","affiliation":[]},{"given":"Dirk","family":"Schr\u00f6pfer","sequence":"additional","affiliation":[]},{"given":"Volker","family":"Wesling","sequence":"additional","affiliation":[]},{"given":"Thomas","family":"Kannengie\u00dfer","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2025,1,9]]},"reference":[{"key":"14955_CR1","doi-asserted-by":"publisher","first-page":"263","DOI":"10.1007\/s40544-017-0183-5","volume":"5","author":"Kenneth Holmberg","year":"2017","unstructured":"Holmberg Kenneth, Erdemir Ali (2017) Influence of tribology on global energy consumption, costs and emissions. Friction 5:263\u2013284. https:\/\/doi.org\/10.1007\/s40544-017-0183-5","journal-title":"Friction"},{"issue":"1","key":"14955_CR2","doi-asserted-by":"publisher","first-page":"1374","DOI":"10.1038\/s41467-018-03875-9","volume":"9","author":"D Bowden","year":"2018","unstructured":"Bowden D, Krysiak Y, Palatinus L, Tsivoulas D, Plana-Ruiz S, Sarakinou E, Kolb U, Stewart D, Preuss M (2018) A high-strength silicide phase in a stainless steel alloy designed for wear-resistant applications. Nat Commun 9(1):1374. https:\/\/doi.org\/10.1038\/s41467-018-03875-9","journal-title":"Nat Commun"},{"key":"14955_CR3","unstructured":"Bohatch RG, Scheid A (2019) Microstructure and properties of cocrmosi alloy coatings by plasma transferred arc (pta) weld surfacing, 2nd International Brazilian Conference on Tribology."},{"key":"14955_CR4","doi-asserted-by":"publisher","first-page":"76","DOI":"10.1590\/S0104-92242012000100011","volume":"17","author":"R Silva","year":"2012","unstructured":"Silva R, Dutra J (2012) Pta-p process - a literature review as basis for innovations. Part 1 of 2: constructive elements. Soldagem &amp; Inspe\u00e7\u00e3o 17:76\u201385. https:\/\/doi.org\/10.1590\/S0104-92242012000100011","journal-title":"Soldagem &amp; Inspe\u00e7\u00e3o"},{"issue":"11\u201312","key":"14955_CR5","doi-asserted-by":"publisher","first-page":"1326","DOI":"10.1016\/j.vacuum.2006.01.037","volume":"80","author":"Tadeusz Hejwowski","year":"2006","unstructured":"Hejwowski Tadeusz (2006) Sliding wear resistance of fe-, ni- and co-based alloys for plasma deposition. Vacuum 80(11\u201312):1326\u20131330. https:\/\/doi.org\/10.1016\/j.vacuum.2006.01.037","journal-title":"Vacuum"},{"key":"14955_CR6","unstructured":"Raghu D, Wu JB (1997) Recent developments in wear and corrosion resistant alloys for oil industry. In: NACE CORROSION: 97016."},{"key":"14955_CR7","doi-asserted-by":"publisher","first-page":"1210","DOI":"10.1016\/j.jmrt.2020.12.026","volume":"10","author":"S Balaguru","year":"2021","unstructured":"Balaguru S, Gupta M (2021) Hardfacing studies of ni alloys: a critical review. J Mater Res Technol 10:1210\u20131242. https:\/\/doi.org\/10.1016\/j.jmrt.2020.12.026","journal-title":"J Mater Res Technol"},{"key":"14955_CR8","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1016\/j.matdes.2013.09.056","volume":"55","author":"S Apay","year":"2014","unstructured":"Apay S, Gulenc B (2014) Wear properties of aisi 1015 steel coated with stellite 6 by microlaser welding. Mater Des 55:1\u20138. https:\/\/doi.org\/10.1016\/j.matdes.2013.09.056","journal-title":"Mater Des"},{"key":"14955_CR9","doi-asserted-by":"publisher","first-page":"1305","DOI":"10.1016\/j.protcy.2016.08.226","volume":"25","author":"M Ferozhkhan","year":"2016","unstructured":"Ferozhkhan M, Duraiselvam M, Kumar G, Bharath R (2016) Plasma transferred arc welding of stellite 6 alloy on stainless steel for wear resistance. Procedia Technol 25:1305\u20131311. https:\/\/doi.org\/10.1016\/j.protcy.2016.08.226","journal-title":"Procedia Technol"},{"key":"14955_CR10","doi-asserted-by":"publisher","first-page":"87","DOI":"10.1016\/j.surfcoat.2014.04.008","volume":"251","author":"R Singh","year":"2014","unstructured":"Singh R, Kumar D, Mishra S, Tiwari S (2014) Laser cladding of stellite 6 on stainless steel to enhance solid particle erosion and cavitation resistance. Surf Coat Technol 251:87\u201397. https:\/\/doi.org\/10.1016\/j.surfcoat.2014.04.008","journal-title":"Surf Coat Technol"},{"issue":"1","key":"14955_CR11","doi-asserted-by":"publisher","first-page":"145","DOI":"10.1007\/s13632-024-01040-x","volume":"13","author":"XZ Zhang","year":"2024","unstructured":"Zhang XZ, Liu R, Wu XY, Wu XJ, Khelfaoui F (2024) Microstructure and hardness investigation of tribaloy alloy T-400C hardfacing deposited on nickel-based alloy inconel 740H via plasma transferred arc welding subjected to long-time aging. Metallogr Microstruct Anal 13(1):145\u2013173. https:\/\/doi.org\/10.1007\/s13632-024-01040-x","journal-title":"Metallogr Microstruct Anal"},{"key":"14955_CR12","doi-asserted-by":"publisher","first-page":"38","DOI":"10.56028\/aetr.5.1.38.2023","volume":"5","author":"Y Wang","year":"2023","unstructured":"Wang Y, Zhu H, Huang J (2023) Corrosion behaviour of tribaloy t400 coating prepared by laser cladding in molten aluminium alloys. Adv Eng Technol Res 5:38. https:\/\/doi.org\/10.56028\/aetr.5.1.38.2023","journal-title":"Adv Eng Technol Res"},{"key":"14955_CR13","first-page":"41","volume":"31","author":"C Cameron","year":"1975","unstructured":"Cameron C, Hoffman R, Poskitt R (1975) Tribaloy intermetallic alloy compositions: new materials or additives for wear resistant applications. Prog. Powder Metall (United States) 31:41\u201351","journal-title":"Prog. Powder Metall (United States)"},{"key":"14955_CR14","doi-asserted-by":"publisher","first-page":"427","DOI":"10.1016\/j.msea.2006.10.088","volume":"452","author":"W Xu","year":"2007","unstructured":"Xu W, Liu R, Patnaik P, Yao M, Wu X (2007) Mechanical and tribological properties of newly developed tribaloy alloys. Mater Sci Eng, A 452:427\u2013436. https:\/\/doi.org\/10.1016\/j.msea.2006.10.088","journal-title":"Mater Sci Eng, A"},{"key":"14955_CR15","doi-asserted-by":"publisher","first-page":"1693","DOI":"10.1007\/BF00555273","volume":"20","author":"A Halstead","year":"1985","unstructured":"Halstead A, Rawlings RD (1985) The effect of iron additions on the microstructure and properties of the \u201ctribaloy\u201d co-mo-cr-si wear resistant alloys. J Mater Sci 20:1693\u20131704. https:\/\/doi.org\/10.1007\/BF00555273","journal-title":"J Mater Sci"},{"key":"14955_CR16","doi-asserted-by":"publisher","first-page":"1652","DOI":"10.1016\/j.wear.2016.12.045","volume":"376\u2013377","author":"A Renz","year":"2017","unstructured":"Renz A, K\u00fcrten D, Lehmann O (2017) Wear of hardfaced valve spindles in highly loaded stationary lean-burn large bore gas engines. Wear 376\u2013377:1652\u20131661. https:\/\/doi.org\/10.1016\/j.wear.2016.12.045","journal-title":"Wear"},{"key":"14955_CR17","doi-asserted-by":"publisher","first-page":"148","DOI":"10.1016\/j.wear.2018.02.013","volume":"402","author":"A Renz","year":"2018","unstructured":"Renz A, Prakash B, Hardell J, Lehmann O (2018) High-temperature sliding wear behaviour of stellite\u00ae 12 and tribaloy\u00ae t400. Wear 402:148\u2013159. https:\/\/doi.org\/10.1016\/j.wear.2018.02.013","journal-title":"Wear"},{"key":"14955_CR18","unstructured":"Glycon I CiteDrive brings reference management to overleaf. https:\/\/glycon.com\/wp-content\/uploads\/2019\/06\/pdf4.pdf Accessed 13.06.2024"},{"issue":"2\u20133","key":"14955_CR19","doi-asserted-by":"publisher","first-page":"174","DOI":"10.1016\/S0257-8972(98)00524-6","volume":"106","author":"Q Ming","year":"1998","unstructured":"Ming Q, Lim L, Chen Z (1998) Laser cladding of nickel-based hardfacing alloys. Surf Coat Technol 106(2\u20133):174\u2013182. https:\/\/doi.org\/10.1016\/S0257-8972(98)00524-6","journal-title":"Surf Coat Technol"},{"key":"14955_CR20","doi-asserted-by":"publisher","DOI":"10.1016\/j.surfcoat.2023.129236","volume":"455","author":"M Aliabadi","year":"2023","unstructured":"Aliabadi M, Khodabakhshi F, Soltani R, Gerlich A (2023) Modification of flamesprayed nicrbsi alloy wear-resistant coating by friction stir processing and furnace re-melting treatments. Surf Coat Technol 455:129236. https:\/\/doi.org\/10.1016\/j.surfcoat.2023.129236","journal-title":"Surf Coat Technol"},{"issue":"3","key":"14955_CR21","doi-asserted-by":"publisher","first-page":"110","DOI":"10.3390\/jmmp7030110","volume":"7","author":"JC Pereira","year":"2023","unstructured":"Pereira JC, Taboada MC, Niklas A, Ray\u00f3n E, Rocchi J (2023) Influence of the chemical composition on the solidification path, strengthening mechanisms and hardness of Ni-Cr-Si-Fe-B self-fluxing alloys obtained by laser-directed energy deposition. J Manuf Mater Proc 7(3):110. https:\/\/doi.org\/10.3390\/jmmp7030110","journal-title":"J Manuf Mater Proc"},{"key":"14955_CR22","doi-asserted-by":"publisher","first-page":"85","DOI":"10.1007\/978-3-030-95463-56","volume":"66","author":"A Eissel","year":"2021","unstructured":"Eissel A, Engelking L, Treutler K, Wesling V, Schroepfer D, Kannengiesser T (2021) (2021) Monickel-iron-alloy modification to enhance additively welded microstructure for subsequent milling. 2nd Int Conf Adv Join Proc (AJP2021), Selected Contrib AJP 66:85\u201399. https:\/\/doi.org\/10.1007\/978-3-030-95463-56","journal-title":"2nd Int Conf Adv Join Proc (AJP2021), Selected Contrib AJP"},{"key":"14955_CR23","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1007\/s00170-022-08669-4","volume":"119","author":"Y Su","year":"2022","unstructured":"Su Y, Li L (2022) Surface integrity of ultrasonic-assisted dry milling of slm ti6al4v using polycrystalline diamond tool. Int J Adv Manuf Technol 119:1\u201310. https:\/\/doi.org\/10.1007\/s00170-022-08669-4","journal-title":"Int J Adv Manuf Technol"},{"key":"14955_CR24","doi-asserted-by":"publisher","first-page":"1427","DOI":"10.1007\/s00170-021-06815-y","volume":"114","author":"Dirk Schroepfer","year":"2021","unstructured":"Schroepfer Dirk, Treutler Kai, Boerner Andreas, Gustus Rene, Kannengiesser Thomas, Wesling Volker (2021) Maus-Friedrichs, W.: Surface finishing of hard-to-machine cladding alloys for highly stressed components. Int J Adv Manuf Tech 114:1427\u20131442. https:\/\/doi.org\/10.1007\/s00170-021-06815-y","journal-title":"Int J Adv Manuf Tech"},{"key":"14955_CR25","doi-asserted-by":"publisher","first-page":"2245","DOI":"10.1007\/s40194-022-01334-0","volume":"66","author":"A Eissel","year":"2022","unstructured":"Eissel A, Engelking L, Treutler K, Wesling V, Schroepfer D, Kannengiesser T (2022) Modification of co\u2013cr alloys to optimize additively welded microstructures and subsequent surface finishing. Welding World, Le Soudage Dans Le Monde 66:2245\u20132257. https:\/\/doi.org\/10.1007\/s40194-022-01334-0","journal-title":"Welding World, Le Soudage Dans Le Monde"},{"key":"14955_CR26","doi-asserted-by":"publisher","unstructured":"Giese M, Graebner M, Schroepfer D, Treutler K, Lorenz S, Kannengiesser T, Wesling V (2024) Alloy modification and ultrasonic-assisted milling of wearresistant alloys with defined surfaces. Welding World: 1\u20139. https:\/\/doi.org\/10.1007\/s40194-024-01786-6","DOI":"10.1007\/s40194-024-01786-6"},{"key":"14955_CR27","doi-asserted-by":"crossref","unstructured":"Dilthey U (2006) Schwei\u00dftechnische Fertigungsverfahren 2, Verhalten der Werkstoffe Beim Schwei\u00dfen. Springer Berlin, Heidelberg.","DOI":"10.1007\/b139036"},{"key":"14955_CR28","doi-asserted-by":"publisher","DOI":"10.1002\/3527602062","volume-title":"Metallische Verbundwerkstoffe","author":"KU Kainer","year":"2003","unstructured":"Kainer KU (2003) Metallische Verbundwerkstoffe. WILEY-VCH Verlag, Weinheim"},{"key":"14955_CR29","unstructured":"Deloro Wear Solutions GmbH: Technical Datasheet Deloro 56 Alloy. https:\/\/www.deloro.com\/fileadmin\/users\/redakteur\/006_Downloads\/Data_Sheets\/Deloro_MDS_Deloro56_rev00.pdf. Acessed 27 November 2024"},{"key":"14955_CR30","unstructured":"Deloro Wear Solutions GmbH: Technical Datasheet Deloro 56 Alloy. https:\/\/www.deloro.com\/fileadmin\/users\/redakteur\/006_Downloads\/Data_Sheets\/Deloro_MDS_Tribaloy400_rev00.pdf. Acessed 27 November 2024"},{"issue":"12","key":"14955_CR31","doi-asserted-by":"publisher","first-page":"2413","DOI":"10.1177\/14644207241265778","volume":"238","author":"M Graebner","year":"2024","unstructured":"Graebner M, Giese M, Treutler K, Lorenz S, Schroepfer D, Wesling V, Kannengiesser T (2024) Processing of crack-free nickel- and cobalt-based wear protection coatings and defined surfaces by subsequent milling processes. Proc Instit Mech Eng Part L J Mater Des Appl 238(12):2413. https:\/\/doi.org\/10.1177\/14644207241265778","journal-title":"Proc Instit Mech Eng Part L J Mater Des Appl"},{"key":"14955_CR32","doi-asserted-by":"publisher","unstructured":"ASTM - Committee MTS (2023) Metallic materials - Rockwell hardness test - part 1: test method (ISO 6508\u20131:2023); German version EN ISO 6508\u20131:2023. DIN German Institute for Standardization. https:\/\/doi.org\/10.31030\/3516833","DOI":"10.31030\/3516833"},{"key":"14955_CR33","doi-asserted-by":"publisher","unstructured":"Kamper S (2019) Eisenbasierte intermetallische hartlegierungen f\u00fcr den verschlei\u00dfschutz am beispiel von einschneckenextrudern. PhD thesis, TU Clausthal. https:\/\/doi.org\/10.21268\/20191202-0 .\u00a0https:\/\/dokumente.ub.tu-clausthal.de\/receive\/clausthal_mods_00001060","DOI":"10.21268\/20191202-0"},{"issue":"6","key":"14955_CR34","doi-asserted-by":"publisher","first-page":"196","DOI":"10.3390\/jmmp7060196","volume":"7","author":"A Niklas","year":"2023","unstructured":"Niklas A, Santos F, Garcia D, Rouco M, Gonz\u00b4alez-Mart\u00b4\u0131nez R, Pereira JC, Ray\u00b4on E, Lopez P, Guillonneau G (2023) Chemical composition effects on the microstructure and hot hardness of nicrsifeb self-fluxing alloys manufactured via gravity casting. J Manuf Mater Proc 7(6):196. https:\/\/doi.org\/10.3390\/jmmp7060196","journal-title":"J Manuf Mater Proc"},{"key":"14955_CR35","unstructured":"Davis JR (2000) Nickel, Cobalt, and Their Alloys. ASM international."},{"key":"14955_CR36","doi-asserted-by":"publisher","first-page":"229","DOI":"10.1007\/s11085-008-9117-y","volume":"70","author":"Y-D Zhang","year":"2008","unstructured":"Zhang Y-D, Yang Z-G, Zhang C (2008) Lan, H.: Oxidation behavior of tribaloy t-800 alloy at 800 and 1,000 c. Oxid Met 70:229\u2013239. https:\/\/doi.org\/10.1007\/s11085-008-9117-y","journal-title":"Oxid Met"},{"issue":"10","key":"14955_CR37","doi-asserted-by":"publisher","first-page":"491","DOI":"10.1179\/030634584790253146","volume":"18","author":"A Halstead","year":"1984","unstructured":"Halstead A, Rawlings R (1984) Structure and hardness of co\u2013mo\u2013cr\u2013si wear resistant alloys (tribaloys). Metal Sci 18(10):491\u2013500. https:\/\/doi.org\/10.1179\/030634584790253146","journal-title":"Metal Sci"},{"key":"14955_CR38","doi-asserted-by":"publisher","first-page":"1248","DOI":"10.1007\/BF01026320","volume":"20","author":"A Halstead","year":"1985","unstructured":"Halstead A, Rawlings RD (1985) The fracture behaviour of two co-mo-cr-si wear resistant alloys (\u201ctribaloys\u201d). J Mater Sci 20:1248\u20131256. https:\/\/doi.org\/10.1007\/BF01026320","journal-title":"J Mater Sci"},{"key":"14955_CR39","unstructured":"Cameron C, Hoffman R, Poskitt R (1975) Tribaloy intermetallic alloy compositions: new materials or additives for wear resistant applications. Prog Powder Metall (United States) 31."},{"issue":"4","key":"14955_CR40","doi-asserted-by":"publisher","DOI":"10.1115\/1.4034075","volume":"138","author":"R Liu","year":"2016","unstructured":"Liu R, Yao J, Zhang Q, Yao MX, Collier R (2016) Effects of silicon content on the microstructure and mechanical properties of cobalt-based tribaloy alloys. J Eng Mater Technol 138(4):041017. https:\/\/doi.org\/10.1115\/1.4034075","journal-title":"J Eng Mater Technol"}],"container-title":["The International Journal of Advanced Manufacturing Technology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00170-024-14955-0.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00170-024-14955-0\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00170-024-14955-0.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,1,9]],"date-time":"2025-01-09T17:02:59Z","timestamp":1736442179000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00170-024-14955-0"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,1,9]]},"references-count":40,"alternative-id":["14955"],"URL":"https:\/\/doi.org\/10.1007\/s00170-024-14955-0","relation":{},"ISSN":["0268-3768","1433-3015"],"issn-type":[{"value":"0268-3768","type":"print"},{"value":"1433-3015","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,1,9]]},"assertion":[{"value":"10 October 2024","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"18 December 2024","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"9 January 2025","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"The authors consent to publish this work.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}</enrichment>
    <enrichment key="local_crossrefDocumentType">journal-article</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">20.01.2025</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Maraike Willeke</author>
    <author>Marcel Giese</author>
    <author>Swenja Lorenz</author>
    <author>Kai Treutler</author>
    <author>Dirk Schröpfer</author>
    <author>Volker Wesling</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wear resistance</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Co-based alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ni-based alloy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>PTA welding process</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic assisted milling process</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/62393/Willeke_et_al-2025-The_International_Journal_of_Advanced_Manufacturing_Technology.pdf</file>
  </doc>
  <doc>
    <id>62291</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2567</pageFirst>
    <pageLast>2575</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>68</volume>
    <type>article</type>
    <publisherName>Springer Science and Business Media LLC</publisherName>
    <publisherPlace>Berlin ; Heidelberg</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Alloy modification and ultrasonic-assisted milling of wear-resistant alloys with defined surfaces</title>
    <abstract language="eng">The reduction of CO2 emissions is closely linked to the development of highly efficient and economical steel components in plant and process engineering. To withstand the high combined corrosive, tribological, thermal, and mechanical stresses, wear-resistant coatings tailored to the application and steel grade are used. In addition to the increasing demand to substitute conventional cobalt alloys with nickel alloys, there is also a growing need for defined or functional surfaces of high integrity. Due to high tool wear, milling operations required to produce the complex geometries of the components are often not economically feasible for SMEs. By means of alloy modification of the filler metals for nickel-based plasma build-up welded wear-resistant coatings and by the use of innovative ultrasonic-assisted milling processes more favourable machinability shall be achieved without reducing the wear protection potential. In this paper, the influence of the microstructure and precipitation morphology adjusted by means of alloy modification on the machinability is investigated. This is done based on a wear protection alloy NiCrMoSiFeB (trade name: Colmonoy 56 PTA) typically used for screw machines, which substitutes conventional CoCr alloys (Stellite). Metallurgical investigations and in-situ measurements of occurring process forces and temperatures at the tool cutting edge during milling as well as subsequent investigations of tool wear and surface integrity allow a detailed analysis and correlation between microstructural properties and machinability. For the cast samples, a clear change in the microstructure and hardness can be seen through the addition of Al, Ti, or Nb. These differences lead to an improvement in the machining process for Nb. Al and Ti cause long-needled or star-shaped precipitations and hardness increases, which lead to higher cutting forces and increased tool wear.</abstract>
    <parentTitle language="eng">Welding in the World</parentTitle>
    <identifier type="doi">10.1007/s40194-024-01786-6</identifier>
    <identifier type="issn">1878-6669</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-622918</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="local_crossrefDocumentType">journal-article</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <enrichment key="date_peer_review">19.12.2024</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Marcel Giese</author>
    <author>Maraike Gräbner</author>
    <author>Dirk Schröpfer</author>
    <author>Kai Treutler</author>
    <author>Svenja Lorenz</author>
    <author>Thomas Kannengießer</author>
    <author>Volker Wesling</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cladding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wear resistant alloys</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alloy modification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Post-processing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic assisted milling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Renewable energy</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/62291/s40194-024-01786-6.pdf</file>
  </doc>
  <doc>
    <id>52356</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>lecture</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Modification of CoCr alloys to optimize of additively welded microstructures and subsequent surface finishing</title>
    <abstract language="eng">Due to increasing requirements relating to the efficiency of highly stressed components in turbine or plant construction, the use of cost-intensive, difficult to process materials is increasingly necessary today. In this context, cobalt-chromium alloys in particular are highly resistant to thermal and mechanical stress, as well as to corrosive and abrasive loads. Moreover, increasingly complex structures and the optimisation of resource efficiency also require additive manufacturing steps for the production or repair of components in many sectors. In order to realise a homogeneous and isotropic microstructure, alloy modifications are made to the alloy CoCr26Ni9Mo5W. For this purpose, hafnium and zirconium are added at 1 % and 0,33 % by mass each, as these elements are supposed to have a positive effect on the microstructure morphology. Plasma-Transferred-Arc is used for the welding tests. Wall structures are welded by multiple single-layer, overlapping welding beads on low-alloyed steel substrate (S355). The results show that the alloying elements hafnium and zirconium have a clear influence on the microstructure. Hardness measurements were also carried out. With each modification, the hardness is increased compared to the original material. The machining analyses show a reduction in cutting forces using ultrasonic assisted milling for high cutting speed and low feed rate.</abstract>
    <enrichment key="eventName">2021 Intermediate meeting of C IX NF</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">09.03.2021</enrichment>
    <enrichment key="eventEnd">10.03.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="InvitedTalks">0</enrichment>
    <author>A. Eissel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alloy modification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasonic-assisted milling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Plasma-Transferred-Arc</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Filler metal modification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Additive manufacturing</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Präsentation</collection>
  </doc>
  <doc>
    <id>56658</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>103</pageFirst>
    <pageLast>113</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>385</volume>
    <type>conferenceobject</type>
    <publisherName>DVS Media GmbH</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Modifikation von CoCr-Legierungen für die additive lichtbogenbasierte Fertigung</title>
    <abstract language="deu">Für Komponenten im Turbinen- oder Anlagenbau werden aufgrund ihrer Eigenschaften häufig Kobalt-Chrom-Legierungen verwendet. Diese weisen eine hohe Korrosionsbeständigkeit und hohen Verschleißwiederstand auf. Aufgrund der komplexen Strukturen und dem Bestreben nach Ressourceneffizienz wird zur Herstellung der Komponenten die additive Fertigung verwendet. Hierbei sind hinsichtlich der Inhomogenität und Anisotropie der Gefüge und deren Eigenschaften weitere Kenntnisse notwendig. Bei den vorliegenden Belastungen liegt ein erhöhter Anspruch an die Oberflächenintegrität vor, welcher durch komplementären Einsatz von additiven und abtragenden Fertigungsschritten sichergestellt wird. Dabei sind gerade Co-Cr-Legierungen wegen der niedrigen Wärmeleitfähigkeit verbunden mit hoher Festigkeit und Zähigkeit äußerst herausfordernd mit Blick auf eine wirtschaftliche Zerspanung mit geometrisch bestimmter Schneide. Ausgehend von dieser Problemstellung erfolgt im Zuge eines Gemeinschaftsvorhabens des ISAF in Kooperation mit der BAM eine gezielte Beeinflussung des Gefüges. Ziel des Projektes ist die Zusammenhänge zwischen verschiedenen Legierungsmodifikationen, der entstehenden Gefügemorphologie und den Zerspanungseigenschaften von Co- Cr-Legierungen für die additive Fertigung mittels PTA darzustellen. Der Fokus liegt auf dem Beheben der bestehenden Nachteile bei gleichzeitigem Aufrechthalten der besonderen Eigenschaften der Legierung. Durch das Hinzulegieren von variierenden Gehalten von Zirkonium und Hafnium wird die Gefügeveränderung eingestellt. Es hat sich gezeigt, dass Hafnium als zusätzliches Legierungselement einen deutlichen Einfluss auf die Gefügemorphologie hat. Darüber hinaus wird die Auswirkung der Legierungsmodifikation auf die Härte und die Zerspanbarkeit dargestellt.</abstract>
    <parentTitle language="deu">DVS Berichte 42. Assistentenseminar Fügetechnik</parentTitle>
    <identifier type="isbn">978-3-96144-210-2</identifier>
    <enrichment key="eventName">42. Assistentenseminar der Wissenschaftlichen Gesellschaft Fügetechnik e.V.</enrichment>
    <enrichment key="eventPlace">Blankenau, Germany</enrichment>
    <enrichment key="eventStart">06.10.2021</enrichment>
    <enrichment key="eventEnd">08.10.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>A. Eissel</author>
    <author>K. Treutler</author>
    <author>V. Wesling</author>
    <author>Lorenz Engelking</author>
    <author>Dirk Schröpfer</author>
    <author>Thomas Kannengießer</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Legierungsmodifikation</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>ultraschallunterstütztes Fräsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Additive Fertigung</value>
    </subject>
    <collection role="institutes" number="">9 Komponentensicherheit</collection>
    <collection role="institutes" number="">9.2 Versuchsanlagen und Prüftechnik</collection>
    <collection role="institutes" number="">9.4 Integrität von Schweißverbindungen</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="themenfelder" number="">Degradationsmechanismen</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
</export-example>
