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  <doc>
    <id>32785</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>14</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-02-06</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Biocompatibility and Corrosion of Microplasma-Sprayed Titanium and Tantalum Coatings versus Titanium Alloy</title>
    <abstract language="eng">This study investigates the in vitro biocompatibility, corrosion resistance, and adhesion strength of a gas abrasive-treated Ti6Al4V alloy, alongside microplasma-sprayed titanium and tantalum coatings. Employing a novel approach in selecting microplasma spray parameters, this study successfully engineers coatings with tailored porosity, roughness, and over 20% porosity with pore sizes up to 200 μm, aiming to enhance bone in-growth and implant integration. This study introduces an innovative methodology for quantifying surface roughness using laser electron microscopy and scanning electron microscopy, facilitating detailed morphological analysis of both the substrate and coatings. Extensive evaluations, including tests for in vitro biocompatibility, corrosion resistance, and adhesive strength, revealed that all three materials are biocompatible, with tantalum coatings exhibiting superior cell proliferation and osteogenic differentiation, as well as the highest corrosion resistance. Titanium coatings followed closely, demonstrating favorable osteogenic properties and enhanced roughness, which is crucial for cell behavior and attachment. These coatings also displayed superior tensile adhesive strengths (27.6 ± 0.9 MPa for Ti and 28.0 ± 4.9 MPa for Ta), surpassing the ISO 13179-1 standard and indicating a robust bond with the substrate. Our findings offer significant advancements in biomaterials for medical implants, introducing microplasma spraying as a versatile tool for customizing implant coatings, particularly emphasizing the superior performance of tantalum coatings in terms of biocompatibility, osteogenic potential, and corrosion resistance. This suggests that tantalum coatings are a promising alternative for enhancing the performance of metal implants, especially in applications demanding high biocompatibility and corrosion resistance.</abstract>
    <parentTitle language="eng">Coatings</parentTitle>
    <identifier type="issn">2079-6412</identifier>
    <identifier type="url">https://www.mdpi.com/2079-6412/14/2/206</identifier>
    <identifier type="doi">10.3390/coatings14020206</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="RelationnotEU">AP14869862</enrichment>
    <enrichment key="BTUfunderNamenotEU">Ministry of Science and Higher Education of the Republic of Kazakhstan</enrichment>
    <enrichment key="Artikelnummer">206</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">3 Globaler Wandel und Transformationsprozesse / Global Change and Transformation Processes</enrichment>
    <author>
      <firstName>Darya</firstName>
      <lastName>Alontseva</lastName>
    </author>
    <submitter>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </submitter>
    <author>
      <firstName>Yuliya</firstName>
      <lastName>Safarova (Yantsen)</lastName>
    </author>
    <author>
      <firstName>Sergii</firstName>
      <lastName>Voinarovych</lastName>
    </author>
    <author>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </author>
    <author>
      <firstName>Ridvan</firstName>
      <lastName>Yamanoglu</lastName>
    </author>
    <author>
      <firstName>Fuad</firstName>
      <lastName>Khoshnaw</lastName>
    </author>
    <author>
      <firstName>Hasan Ismail</firstName>
      <lastName>Yavuz</lastName>
    </author>
    <author>
      <firstName>Assem</firstName>
      <lastName>Nessipbekova</lastName>
    </author>
    <author>
      <firstName>Aizhan</firstName>
      <lastName>Syzdykova</lastName>
    </author>
    <author>
      <firstName>Bagdat</firstName>
      <lastName>Azamatov</lastName>
    </author>
    <author>
      <firstName>Alexandr</firstName>
      <lastName>Khozhanov</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>biocompatible coatings</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>in vitro test</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>corrosion resistance</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>microplasma spraying (MPS)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>medical implants</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>coating techniques</value>
    </subject>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
  </doc>
  <doc>
    <id>32983</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-03-13</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Investigating the effect of Zr content on electrochemical and tribological properties of newly developed near β-type Ti-alloys (Ti–25Nb-xZr) for biomedical applications</title>
    <abstract language="eng">In order to create alloys with exceptional properties for orthopedic uses, this study focuses on the impact of zirconium (Zr) content on the structural, electrochemical, and tribological qualities of nanostructured Ti–25Nb-xZr [x = 5, 10, 15, 20, 25, and 30 atomic (at.) %] alloys. The structural evolution was investigated using XRD and SEM techniques. The mechanical characteristics of the produced alloys, including Vickers hardness and Young's modulus, were measured. In addition, the corrosion tests were performed using the OCP, EIS, and PD methods in Ringer's solution within the independent pH range at 37 °C. A ball-on-disc tribometer was used to investigate the tribological behavior of the alloys under various loads and wet conditions using the Ringer solution. It has been verified that Zr content (at. %) in the alloys had an impact on their morphologies, structural evolution, and mechanical characteristics. According to the morphological analysis, the particle and crystallite size decreases with increasing Zr content. Young's modulus and Vickers hardness show the same tendency. The EIS data demonstrated that a single passive film formed on the alloy surfaces, and the addition of Zr enhanced the corrosion resistance of the passive films. The polarization curves demonstrate that the alloys had low corrosion current densities and large passive areas without the passive films disintegrating. Likewise, the inclusion of Zr resulted in a reduction in the corrosion and passive current densities values. All of these results suggested that the titanium alloys exhibit a more noble electrochemical activity caused by Zr. From the tribological perspective, it was found that the friction coefficient of the alloys reduced with increasing Zr content.</abstract>
    <parentTitle language="eng">Journal of Science: Advanced Materials and Devices</parentTitle>
    <identifier type="issn">2468-2179</identifier>
    <identifier type="url">https://www.sciencedirect.com/science/article/pii/S2468217924000261</identifier>
    <identifier type="doi">10.1016/j.jsamd.2024.100695</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="Artikelnummer">100695</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">3 Globaler Wandel und Transformationsprozesse / Global Change and Transformation Processes</enrichment>
    <author>
      <firstName>Mamoun</firstName>
      <lastName>Fellah</lastName>
    </author>
    <submitter>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </submitter>
    <author>
      <firstName>Naouel</firstName>
      <lastName>Hezil</lastName>
    </author>
    <author>
      <firstName>Dikra</firstName>
      <lastName>Bouras</lastName>
    </author>
    <author>
      <firstName>Nabila</firstName>
      <lastName>Bouchareb</lastName>
    </author>
    <author>
      <firstName>Alejandro Perez</firstName>
      <lastName>Larios</lastName>
    </author>
    <author>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </author>
    <author>
      <firstName>Gamal A.</firstName>
      <lastName>El-Hiti</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ti-Nb-Zr alloys</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Nanobiomaterials</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Tribological behavior</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Corrosion</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ringer's solution</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biomedical applications</value>
    </subject>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
  </doc>
  <doc>
    <id>34999</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>45</pageFirst>
    <pageLast>58</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>69</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2025-01-07</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Microplasma-Sprayed Titanium and Hydroxyapatite Coatings on Ti6Al4V Alloy: in vitro Biocompatibility and Corrosion Resistance: Part I</title>
    <abstract language="eng">This two-part paper investigates the bioactivity and mechanical properties of coatings applied to Ti6Al4V, a common titanium alloy used in endoprosthetic implants. Coatings made from hydroxyapatite (HA) powder and commercially pure titanium (CP-Ti) wires were applied using microplasma spraying. The study focuses on the responses of rat mesenchymal stem cells (MSCs), which are essential for bone healing, to these coatings. Part I shows how adjusting the microplasma spraying process allows coatings with varying porosity and surface roughness to be achieved.</abstract>
    <parentTitle language="eng">Johnson Matthey Technology Review</parentTitle>
    <identifier type="url">https://technology.matthey.com/content/journals/10.1595/205651325X17201903387613</identifier>
    <identifier type="doi">10.1595/205651325X17201903387613</identifier>
    <enrichment key="Fprofil">2 Gesundheit und Lifes Sciences / Health and Life Sciences</enrichment>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="BTUfunderName">Ostpartnerschaft programm between Brandenburg University of Technology (BTU) Cottbus-Senftenberg and D. Serikbayev East Kazakhstan State Technical University</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <author>
      <firstName>Darya</firstName>
      <lastName>Alontseva</lastName>
    </author>
    <submitter>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </submitter>
    <author>
      <firstName>Yuliya</firstName>
      <lastName>Safarova (Yantsen)</lastName>
    </author>
    <author>
      <firstName>Sergii</firstName>
      <lastName>Voinarovych</lastName>
    </author>
    <author>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </author>
    <author>
      <firstName>Ridvan</firstName>
      <lastName>Yamanoglu</lastName>
    </author>
    <author>
      <firstName>Fuad</firstName>
      <lastName>Khoshnaw</lastName>
    </author>
    <author>
      <firstName>Assem</firstName>
      <lastName>Nessipbekova</lastName>
    </author>
    <author>
      <firstName>Aizhan</firstName>
      <lastName>Syzdykova</lastName>
    </author>
    <author>
      <firstName>Hasan Ismail</firstName>
      <lastName>Yavuz</lastName>
    </author>
    <author>
      <firstName>Sergii</firstName>
      <lastName>Kaliuzhnyi</lastName>
    </author>
    <author>
      <firstName>Alexander</firstName>
      <lastName>Krasavin</lastName>
    </author>
    <author>
      <firstName>Bagdat</firstName>
      <lastName>Azamatov</lastName>
    </author>
    <author>
      <firstName>Alexandr</firstName>
      <lastName>Khozhanov</lastName>
    </author>
    <author>
      <firstName>Farkhad</firstName>
      <lastName>Olzhayev</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Endoprosthesis implants</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biocompatible coatings</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Porosity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surface roughness</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>In vitro test</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Elastic modulus</value>
    </subject>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
  </doc>
  <doc>
    <id>35007</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>59</pageFirst>
    <pageLast>75</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>69 (2025)</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2025-01-07</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Microplasma-sprayed titanium and hydroxyapatite coatings on Ti6Al4V alloy: in vitro biocompatibility and corrosion resistance : part II coatings enhance cell proliferation, corrosion resistance and implant integration</title>
    <abstract language="eng">Part II presents the results which show that HA coatings significantly enhance MSC proliferation by 13% compared to the titanium alloy base, while titanium coatings also exhibit an 11% increase. Porosity inversely affects CP-Ti’s elasticity. Coatings with lower porosity demonstrate better corrosion resistance. HA coatings promote osteogenic activity and angiogenesis, which is crucial for implant integration.</abstract>
    <parentTitle language="eng">Johnson Matthey Technology Review</parentTitle>
    <identifier type="issn">2056-5135</identifier>
    <identifier type="doi">10.1595/205651325X17290035905758</identifier>
    <enrichment key="Fprofil">2 Gesundheit und Lifes Sciences / Health and Life Sciences</enrichment>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="BTUfunderName">Ostpartnerschaft programm between Brandenburg University of Technology (BTU) Cottbus-Senftenberg and D. Serikbayev East Kazakhstan State Technical University</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <author>
      <firstName>Darya</firstName>
      <lastName>Alontseva</lastName>
    </author>
    <submitter>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </submitter>
    <author>
      <firstName>Yuliya</firstName>
      <lastName>Safarova (Yantsen)</lastName>
    </author>
    <author>
      <firstName>Sergii</firstName>
      <lastName>Voinarovych</lastName>
    </author>
    <author>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </author>
    <author>
      <firstName>Ridvan</firstName>
      <lastName>Yamanoglu</lastName>
    </author>
    <author>
      <firstName>Fuad</firstName>
      <lastName>Khoshnaw</lastName>
    </author>
    <author>
      <firstName>Assem</firstName>
      <lastName>Nessipbekova</lastName>
    </author>
    <author>
      <firstName>Aizhan</firstName>
      <lastName>Syzdykova</lastName>
    </author>
    <author>
      <firstName>Hasan Ismail</firstName>
      <lastName>Yavuz</lastName>
    </author>
    <author>
      <firstName>Sergii</firstName>
      <lastName>Kaliuzhnyi</lastName>
    </author>
    <author>
      <firstName>Alexander</firstName>
      <lastName>Krasavin</lastName>
    </author>
    <author>
      <firstName>Bagdat</firstName>
      <lastName>Azamatov</lastName>
    </author>
    <author>
      <firstName>Alexandr</firstName>
      <lastName>Khozhanov</lastName>
    </author>
    <author>
      <firstName>Farkhad</firstName>
      <lastName>Olzhayev</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Endoprosthesis implants</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biocompatible coatings</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Porosity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surface roughness</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>In vitro test</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Elastic modulus</value>
    </subject>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
  </doc>
  <doc>
    <id>34301</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>11</pageNumber>
    <edition/>
    <issue>4</issue>
    <volume>2023</volume>
    <type>articler</type>
    <publisherName>Wiley</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-10-28</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">The rate of environmental change as an important driver across scales in ecology</title>
    <abstract language="eng">Global change has been predominantly studied from the prism of ‘how much' rather than ‘how fast' change occurs. Associated to this, there has been a focus on environmental drivers crossing a critical value and causing so‐called regime shifts. This presupposes that the rate at which environmental conditions change is slow enough to allow the ecological entity to remain close to a stable attractor (e.g. an equilibrium). However, environmental change is occurring at unprecedented rates. Equivalently to the classical regime shifts, theory shows that a critical threshold in rates of change can exist, which can cause rate‐induced tipping (R‐tipping). However, the potential implications of R‐tipping in ecology remain understudied. We aim to facilitate the application of R‐tipping theory in ecology with the objective of identifying which properties (e.g. level of organisation) increase susceptibility to rates of change. First, we clarify the fundamental difference between tipping caused by the magnitude as opposed to the rate of change crossing a threshold. Then we present examples of R‐tipping from the ecological literature and seek the ecological properties related to higher sensitivity to rates of change. Specifically, we consider the role of the level of ecological organisation, spatial processes, eco‐evolutionary dynamics and pair–wise interactions in mediating or buffering rate‐induced transitions. Finally, we discuss how targeted experiments can investigate the mechanisms associated to increasing rates of change. Ultimately, we seek to highlight the need to better understand how rates of environmental change may induce ecological responses and to facilitate the systematic study of rates of environmental change in the context of current global change.</abstract>
    <parentTitle language="eng">Oikos</parentTitle>
    <identifier type="doi">10.1111/oik.09616</identifier>
    <identifier type="issn">0030-1299</identifier>
    <enrichment key="opus_doi_flag">true</enrichment>
    <enrichment key="opus_doi_json">{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,7,4]],"date-time":"2024-07-04T03:21:14Z","timestamp":1720063274925},"reference-count":70,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2022,12,28]],"date-time":"2022-12-28T00:00:00Z","timestamp":1672185600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Oikos"],"published-print":{"date-parts":[[2023,4]]},"abstract":"&lt;jats:p&gt;Global change has been predominantly studied from the prism of \u2018how much' rather than \u2018how fast' change occurs. Associated to this, there has been a focus on environmental drivers crossing a critical value and causing so\u2010called regime shifts. This presupposes that the rate at which environmental conditions change is slow enough to allow the ecological entity to remain close to a stable attractor (e.g. an equilibrium). However, environmental change is occurring at unprecedented rates. Equivalently to the classical regime shifts, theory shows that a critical threshold in rates of change can exist, which can cause rate\u2010induced tipping (R\u2010tipping). However, the potential implications of R\u2010tipping in ecology remain understudied. We aim to facilitate the application of R\u2010tipping theory in ecology with the objective of identifying which properties (e.g. level of organisation) increase susceptibility to rates of change. First, we clarify the fundamental difference between tipping caused by the magnitude as opposed to the rate of change crossing a threshold. Then we present examples of R\u2010tipping from the ecological literature and seek the ecological properties related to higher sensitivity to rates of change. Specifically, we consider the role of the level of ecological organisation, spatial processes, eco\u2010evolutionary dynamics and pair\u2013wise interactions in mediating or buffering rate\u2010induced transitions. Finally, we discuss how targeted experiments can investigate the mechanisms associated to increasing rates of change. 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    <author>
      <firstName>Alexis D.</firstName>
      <lastName>Synodinos</lastName>
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      <firstName>Uta</firstName>
      <lastName>Warstat</lastName>
    </submitter>
    <author>
      <firstName>Rajat</firstName>
      <lastName>Karnatak</lastName>
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    <author>
      <firstName>Carlos A.</firstName>
      <lastName>Aguilar‐Trigueros</lastName>
    </author>
    <author>
      <firstName>Pierre</firstName>
      <lastName>Gras</lastName>
    </author>
    <author>
      <firstName>Tina</firstName>
      <lastName>Heger</lastName>
    </author>
    <author>
      <firstName>Danny</firstName>
      <lastName>Ionescu</lastName>
    </author>
    <author>
      <firstName>Stefanie</firstName>
      <lastName>Maaß</lastName>
    </author>
    <author>
      <firstName>Camille L.</firstName>
      <lastName>Musseau</lastName>
    </author>
    <author>
      <firstName>Gabriela</firstName>
      <lastName>Onandia</lastName>
    </author>
    <author>
      <firstName>Aimara</firstName>
      <lastName>Planillo</lastName>
    </author>
    <author>
      <firstName>Lina</firstName>
      <lastName>Weiss</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Wollrab</lastName>
    </author>
    <author>
      <firstName>Masahiro</firstName>
      <lastName>Ryo</lastName>
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    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>climate change</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ecological communities</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>eco-evo feedbacks</value>
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      <language>eng</language>
      <type>uncontrolled</type>
      <value>transitions</value>
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    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>global change</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>R-tipping</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>temporal ecology</value>
    </subject>
    <collection role="institutes" number="2421">FG Environmental Data Science</collection>
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    <title language="eng">Structural, mechanical and tribological performance of a nano structured biomaterial Co–Cr–Mo alloy synthesized via mechanical alloying</title>
    <abstract language="eng">The influence of milling time on the tribological behavior of a Co–Cr–Mo alloy designed for biomedical applications, synthesized via mechanical alloying is investigated. Elemental Co, Cr and Mo powders are milled using different milling times (2, 6, 12 and 18 h) in a high-energy ball mill. The resulting powders were subjected to cold uniaxial and hot isostatic pressing respectively, followed by sintering to obtain cylindrical samples, which were evaluated for their structural, mechanical and the wear behavior. Results showed that the grain and crystallite sizes of the powders decreased with increasing milling time, reaching low values of &lt;10 μm and 32 μm respectively, at higher milling times. Furthermore, the wear rates and the coefficients of friction were lower, at higher milling times due to high densities (96%), and higher elasto-plastic resistance, as presented by the H/E and H3/E2 values of 0.026 and 0.0021 GPa, respectively. Increased milling time enables the refinement of grains and reduction in porosity in the Co–Cr–Mo alloy, which in turn increases the alloy's elasto-plastic resistance and enhances its wear resistance.</abstract>
    <parentTitle language="eng">Journal of Materials Research and Technology</parentTitle>
    <identifier type="issn">2214-0697</identifier>
    <identifier type="url">https://www.sciencedirect.com/science/article/pii/S2238785423012796</identifier>
    <identifier type="doi">10.1016/j.jmrt.2023.06.031</identifier>
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    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
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    <author>
      <firstName>Mamoun</firstName>
      <lastName>Fellah</lastName>
    </author>
    <submitter>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
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    <author>
      <firstName>Naouel</firstName>
      <lastName>Hezil</lastName>
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    <author>
      <firstName>Dikra</firstName>
      <lastName>Bouras</lastName>
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    <author>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
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    <author>
      <firstName>Mohammed Abdul</firstName>
      <lastName>Samad</lastName>
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    <author>
      <firstName>Alex</firstName>
      <lastName>Montagne</lastName>
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    <author>
      <firstName>Assmaa</firstName>
      <lastName>Abd-Elmonem</lastName>
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    <author>
      <firstName>Sayed M El</firstName>
      <lastName>Din</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Tribology</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wear resistance</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Friction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Powder metallurgy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Co–Cr–Mo alloy</value>
    </subject>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
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    <completedDate>2021-03-01</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A Comparative Study on Modified Johnson–Cook and Arrhenius-Type Constitutive Models to Predict the Hot Deformation Behaviour of Molybdenum-Hafnium-Carbide Alloy</title>
    <abstract language="eng">Molybdenum alloys are commonly used as tool material for high-temperature deformation processes like forming or forging. For these types of application, the material has to withstand static load at elevated temperatures. To investigate the high-temperature performance of the material, uniaxial hot tensile tests were performed on a Mo-1.2% Hf-0.1% C alloy (MHC) over the temperature range of 1173-1473 K with intervals of 100 K and strain rates of 0.001, 0.01 and 0.1 s−1 up to the fracture of the specimen. The flow stress decreases with increase in temperature and the reduction in strain rate. This behaviour could be related to the increasing rate of restoration mechanisms, i.e. dynamic recrystallization or recovery as well as to the decrease in the strain hardening rate. Microstructure of the two most critical hot deformation conditions were shown and compared. Based on modified Johnson–Cook and strain-compensated Arrhenius-type models, constitutive equations were established to predict the high-temperature flow stress of the respective MHC alloy. The accuracy of both models was evaluated by comparing the predicted stress values and the values obtained from experiments. Correlation coefficient, average absolute relative error, the number of material constants involved and the computational time required for evaluating the constants were calculated to quantify and compare the precision of both models. The flow stress values predicted by the constitutive equations are in good agreement with the experimental results. At lower strain rates (0.001 and 0.01 s−1), distinct deviation from the experimental results can be observed for the modified Johnson–Cook model. Despite the longer evaluation time and the larger number of material constants, the deformation behaviour, tracked by the Arrhenius-type model is more accurate throughout the entire deformation process.</abstract>
    <parentTitle language="eng">Journal of Materials Engineering and Performance</parentTitle>
    <identifier type="issn">1059-9495</identifier>
    <identifier type="issn">1544-1024</identifier>
    <identifier type="doi">10.1007/s11665-021-05464-2</identifier>
    <enrichment key="opus.import.date">2023-03-25T13:37:07+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">deepgreen</enrichment>
    <enrichment key="opus.import.file">attachment; filename=deposit.zip</enrichment>
    <enrichment key="opus.import.checksum">1d26b81511bccb4916be764398cf32b1</enrichment>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">3 Globaler Wandel und Transformationsprozesse / Global Change and Transformation Processes</enrichment>
    <author>
      <firstName>Athar</firstName>
      <lastName>Safari</lastName>
    </author>
    <author>
      <firstName>Muhammad</firstName>
      <lastName>Imran</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiss</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>constitutive equation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>flow stress</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>hot tensile deformation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>molybdenum-hafnium-carbide alloy (MHC)</value>
    </subject>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
    <collection role="Import" number="import">Import</collection>
  </doc>
  <doc>
    <id>32566</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>6</pageNumber>
    <edition/>
    <issue/>
    <volume>237</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-01-22</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Mechanisms of necklace recrystallization in a BCC Fe-Al-Ta alloy with strengthening Laves phase precipitates</title>
    <abstract language="eng">A necklace structure composed of fine grains formed by dynamic recrystallization was uncommonly observed at the pre-existing grain boundaries during the hot compression of a BCC Fe-25Al-1.5Ta alloy containing C14 - (Fe, Al)2Ta Laves phase precipitates. Two possible mechanisms for necklace formation were proposed; particle-stimulated nucleation and grain boundary bulging, depending on whether the original grain boundaries are occupied by C14 particles, or they are free of them. Recrystallization was initiated preferentially around the clusters of large particles at the boundaries containing particles. In contrast, the bulging of the original grain boundaries by strain-induced boundary migration was observed as a preliminary stage for necklace formation at the particle-free boundaries. The necklace structure expanded into the deformed volume in such a way that low-angle subgrain boundaries decorating the necklace layers transformed into grains with increasing deformation strain.</abstract>
    <parentTitle language="eng">Scripta Materialia</parentTitle>
    <identifier type="url">https://www.sciencedirect.com/science/article/pii/S1359646223004281</identifier>
    <identifier type="doi">10.1016/j.scriptamat.2023.115705</identifier>
    <identifier type="issn">1359-6462</identifier>
    <identifier type="issn">1872-8456</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="Artikelnummer">115705</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">3 Globaler Wandel und Transformationsprozesse / Global Change and Transformation Processes</enrichment>
    <author>
      <firstName>Aliakbar</firstName>
      <lastName>Emdadi</lastName>
    </author>
    <submitter>
      <firstName>Yitong</firstName>
      <lastName>Yang</lastName>
    </submitter>
    <author>
      <firstName>Yitong</firstName>
      <lastName>Yang</lastName>
    </author>
    <author>
      <firstName>Sebastian</firstName>
      <lastName>Bolz</lastName>
    </author>
    <author>
      <firstName>Oleg</firstName>
      <lastName>Stryzhyboroda</lastName>
    </author>
    <author>
      <firstName>Michael</firstName>
      <lastName>Tovar</lastName>
    </author>
    <author>
      <firstName>Sergej</firstName>
      <lastName>Gein</lastName>
    </author>
    <author>
      <firstName>Ulrike</firstName>
      <lastName>Hecht</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
  </doc>
  <doc>
    <id>32567</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber>17</pageNumber>
    <edition/>
    <issue>17</issue>
    <volume>16</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2024-01-22</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">FEM Simulations of Fatigue Crack Initiation in the Oligocrystalline Microstructure of Stents</title>
    <abstract language="eng">For over two decades, vascular stents have been widely used to treat clogged vessels,serving as a scaffold to enlarge the narrowed lumen and recover the arterial flow area. High-purityoligocrystalline austenitic steel is usually applied for the production of stents. Despite the popularityand benefit of stenting, it still may cause serious clinical adverse issues, such as in-stent restenosisand stent fracture. Therefore, the study of the mechanical properties of stents and in particularthe prediction of their life cycles are in the focus of materials research. In our contribution, withinthe finite element method, a two-scale model of crack initiation in the microstructure of stents iselaborated. The approach is developed on the basis of the physically based Tanaka–Mura model(TMM), considering the evolution of shear bands during the crack initiation phase. The model allowsfor the analysis of the microstructure with respect to the life cycles of real materials. The effects ofdifferent loading conditions, grain orientation, and thickness of the specimen on Wöhler curves wereanalysed. It was found that the microstructural features of oligocrystals are very sensitive to differentloading conditions with respect to their fatigue behaviour and play a major role in fatigue crackinitiation. Different grain-orientation distributions result in qualitative and quantitative differencesin stress distribution and in the number of cycles for crack initiation. It was found that presence ofa neutral zone in the cut-out of the microstructure under three-point-bending loading conditionschanges the qualitative and quantitative patterns of stress distribution and affects the number ofcycles for crack initiation. It was found that under both tensile and bending loading conditions,thicker specimens require more cycles for crack initiation. The Wöhler curves for crack initiation inoligocrystalline microstructures of stents could be compared with the ones in the experiment, takinginto account that for high cyclic fatigue (HCF), typically, more than 70% of the cycles refer to crackinitiation. The developed numerical tools could be used for the material design of stents</abstract>
    <parentTitle language="eng">Materials</parentTitle>
    <identifier type="url">https://www.mdpi.com/1996-1944/16/17/6003</identifier>
    <identifier type="doi">10.3390/ma16176003</identifier>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="BTUfunderName">Deutsche Forschungsgemeinschaft</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="Artikelnummer">6003</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <enrichment key="Fprofil">1 Energiewende und Dekarbonisierung / Energy Transition and Decarbonisation</enrichment>
    <enrichment key="Fprofil">3 Globaler Wandel und Transformationsprozesse / Global Change and Transformation Processes</enrichment>
    <author>
      <firstName>Galina</firstName>
      <lastName>Lasko</lastName>
    </author>
    <submitter>
      <firstName>Yitong</firstName>
      <lastName>Yang</lastName>
    </submitter>
    <author>
      <firstName>Yitong</firstName>
      <lastName>Yang</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiss</lastName>
    </author>
    <author>
      <firstName>Siegfried</firstName>
      <lastName>Schmauder</lastName>
    </author>
    <author>
      <firstName>Kiarash</firstName>
      <lastName>Dogahe</lastName>
    </author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>SCHM 746/222-1</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>WE 2671/11-1</value>
    </subject>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
  </doc>
  <doc>
    <id>35938</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2297</pageFirst>
    <pageLast>2316</pageLast>
    <pageNumber>20</pageNumber>
    <edition/>
    <issue/>
    <volume>36</volume>
    <type>articler</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2025-05-19</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Bioactivity and tribological performance of a novel nano-biomaterial beta-type Ti-alloy</title>
    <abstract language="eng">This study investigates the bioactivity; wear performance, and topography of a novel beta-type titanium-based alloy using techniques such as scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and 2D and 3D analysis. The tribological test was evaluated using a ball-on-disk tribometer in a wet environment. Different loads of 2, 6, and 10 N were applied during the evolution. The data results indicate a significant effect of the milling process on the formation of the hydroxyapatite layer on the surfaces of the Ti–Nb–Mo alloy. Both the wear volume and rate showed a consistent trend of decrease as the milling time increased from 2 to 12 h for all applied loads. The minimum values of wear and volume were reached after 12 h of milling. The improvement in tribological behavior can be attributed to the improved mechanical properties of the alloys. In addition, the significant presence of niobium (Nb) and molybdenum (Mo) plays a critical role in achieving high coefficient of friction values. The primary wear mechanism observed in the Ti–25Nb–25Mo system was adhesive wear in addition to abrasive wear. With its lower Young's modulus and favorable biological and tribological properties, the Ti–25Nb–25Mo alloy represents a promising option for bone tissue applications in orthopedics.</abstract>
    <parentTitle language="eng">Journal of materials research and technology</parentTitle>
    <identifier type="issn">2214-0697</identifier>
    <identifier type="url">https://www.sciencedirect.com/science/article/pii/S2238785425006908</identifier>
    <identifier type="doi">https://doi.org/10.1016/j.jmrt.2025.03.180</identifier>
    <enrichment key="Fprofil">2 Gesundheit und Lifes Sciences / Health and Life Sciences</enrichment>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>
      <firstName>Marwa</firstName>
      <lastName>Dahmani</lastName>
    </author>
    <submitter>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </submitter>
    <author>
      <firstName>Mamoun</firstName>
      <lastName>Fellah</lastName>
    </author>
    <author>
      <firstName>Naouel</firstName>
      <lastName>Hezil</lastName>
    </author>
    <author>
      <firstName>Mohamed-Cherif</firstName>
      <lastName>Benoudia</lastName>
    </author>
    <author>
      <firstName>Aleksei</firstName>
      <lastName>Obrosov</lastName>
    </author>
    <author>
      <firstName>Gamal A.</firstName>
      <lastName>El-Hiti</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ti–25Nb–25Mo</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Milling time</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bioactivity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hydroxyapatite</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Friction coefficient</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wear rate</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Biomaterials</value>
    </subject>
    <collection role="institutes" number="3406">FG Metallkunde und Werkstofftechnik</collection>
  </doc>
  <doc>
    <id>36287</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>927</pageFirst>
    <pageLast>935</pageLast>
    <pageNumber>9</pageNumber>
    <edition/>
    <issue/>
    <volume>54</volume>
    <type>conferenceobject_ref</type>
    <publisherName>IWA Publishing</publisherName>
    <publisherPlace>Millersville, PA</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2025-07-16</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Void closure behavior during hot forming of an Fe-Al alloy</title>
    <abstract language="eng">Hot forging is a forming process that can be used as a post-processing treatment to close residual porosity and refine the microstructure of additively manufactured materials, resulting in improved mechanical properties. During hot forging, void closure occurs through plastic deformation resulting from a predominantly compressive stress state at elevated temperatures. In the present work, Fe-25Al-1.5Ta (at. %) samples have been produced by laser powder bed fusion (LPBF) using a larger layer thickness and scan speed than commonly used to achieve a target porosity fraction of approximately 10%. Full densification is attempted in the subsequent hot compression step at various height reduction ratios. The as-built LPBF samples contained 8-10% voids. After deformation to true strains of 0.2, 0.4, and 0.6, the void fraction decreased significantly to approximately 4%, 2.3%, and 1.1%, respectively. Hot compression resulted in the complete closure of large pores with a size range of 200-300 µm and a significant reduction in the size of small to medium pores. These results show potential for improving the productivity of the LPBF by speeding up the process by increasing layer thickness and scanning speed while maintaining a reasonable density. Full densification should be achieved by subsequent hot forging.</abstract>
    <parentTitle language="eng">Materials research proceedings</parentTitle>
    <identifier type="isbn">978-1-64490-359-9</identifier>
    <identifier type="issn">2474-395X</identifier>
    <identifier type="doi">10.21741/9781644903599-99</identifier>
    <enrichment key="Fprofil">5 Sonstige / Other</enrichment>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="RelationnotEU">528361532</enrichment>
    <enrichment key="BTUfunderNamenotEU">DFG</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>
      <firstName>Aliakbar</firstName>
      <lastName>Emdadi</lastName>
    </author>
    <submitter>
      <firstName>Felix</firstName>
      <lastName>Jensch</lastName>
    </submitter>
    <author>
      <firstName>Felix</firstName>
      <lastName>Jensch</lastName>
    </author>
    <author>
      <firstName>Joanna</firstName>
      <lastName>Szyndler</lastName>
    </author>
    <author>
      <firstName>Hsuan-Po</firstName>
      <lastName>Huang</lastName>
    </author>
    <author>
      <firstName>Sebastian</firstName>
      <lastName>Härtel</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Hot metal forming</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Laser powder bed fusion (LPBF)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Post-processing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Void closure</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>X-Ray micro-computed tomography</value>
    </subject>
    <collection role="institutes" number="3405">FG Hybride Fertigung</collection>
  </doc>
  <doc>
    <id>36281</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>12</pageLast>
    <pageNumber>12</pageNumber>
    <edition/>
    <issue/>
    <volume>13</volume>
    <type>articler</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2025-07-16</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Hot forming behavior of tungsten carbide reinforced Ni-based superalloy 625 additively manufactured by laser directed energy deposition</title>
    <abstract language="eng">The demands of high-performance industries such as aerospace, automotive, tool manufacturing, oil, and gas industries are driving the innovation in high-performance materials and their production methods. This study explores the impact of hybrid manufacturing, specifically the effect of the addition of tungsten carbide (WC/W2C) via Laser-Directed Energy Deposition (L-DED), on the hot workability, hardness, and microstructure of nickel-based superalloy Inconel 625 (IN625). IN625 is known for its high temperature and high corrosion resistance, and tungsten carbide for its high wear resistance and grain refinement effect. The integration of WC/W2C particles into the IN625 matrix, in addition to the use of the hybrid approach of additive manufacturing followed by a hot–forming process, significantly influences the microstructure and mechanical behavior of the material. Thus, while incorporation of the WC/W2C can strengthen the material and extend the mechanical limitations, its full impact, including any potential usages, should be thoroughly evaluated for the intended application of the materials. To understand the effect of WC/W2C, additive manufacturing of IN625 both with and without WC/W2C and isothermal hot compression was carried out. The objective is to analyze the differences in microstructure and properties between L-DED manufactured IN625, and WC-reinforced IN625, and their hot-forming behavior, focusing on the effects of WC addition and post-deformation on microstructure and mechanical properties. This work represents the first investigation into the effect of WC/W2C hard particles on the hot-forming process of additively manufactured Ni-based metal matrix composites.</abstract>
    <parentTitle language="eng">Additive manufacturing letters</parentTitle>
    <identifier type="doi">10.1016/j.addlet.2025.100267</identifier>
    <identifier type="issn">2772-3690</identifier>
    <enrichment key="Fprofil">5 Sonstige / Other</enrichment>
    <enrichment key="BTU">an der BTU erstellt / created at BTU</enrichment>
    <enrichment key="Referiert">Beitrag ist referiert / Article peer-reviewed</enrichment>
    <enrichment key="Publikationsweg">Open Access</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>
      <firstName>Gökhan</firstName>
      <lastName>Ertugrul</lastName>
    </author>
    <submitter>
      <firstName>Gökhan</firstName>
      <lastName>Ertugrul</lastName>
    </submitter>
    <author>
      <firstName>Aliakbar</firstName>
      <lastName>Emdadi</lastName>
    </author>
    <author>
      <firstName>Angelika</firstName>
      <lastName>Jedynak</lastName>
    </author>
    <author>
      <firstName>Sabine</firstName>
      <lastName>Weiß</lastName>
    </author>
    <author>
      <firstName>Sebastian</firstName>
      <lastName>Härtel</lastName>
    </author>
    <collection role="institutes" number="3405">FG Hybride Fertigung</collection>
  </doc>
</export-example>
