<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>45660</id>
    <completedYear/>
    <publishedYear>2018</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>3973</pageFirst>
    <pageLast>3987</pageLast>
    <pageNumber/>
    <edition/>
    <issue>9</issue>
    <volume>49A</volume>
    <type>article</type>
    <publisherName>Springer Sciences &amp; Business Media</publisherName>
    <publisherPlace>New York, NY</publisherPlace>
    <creatingCorporation>The Minerals, Metals and Materials Society (TMS)</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Creep of single crystals of nickel-based superalloys at ultra-high homologous temperature</title>
    <abstract language="deu">The creep behavior of single crystals of the nickel-based superalloy CMSX-4 was investigated at 1288 °C, which is the temperature of the hot isostatic pressing treatment applied to this superalloy in the industry. It was found that at this super-solvus temperature, where no gammaPrime-strengthening occurs, the superalloy is very soft and rapidly deforms under stresses between 4 and 16 MPa. The creep resistance was found to be very anisotropic, e.g., the creep rate of [001] crystals was about 11 times higher than that of a [111] crystal. The specimens of different orientations also showed a very different necking behavior. The reduction of the cross-sectional area psi of [001] crystals reached nearly 100 pct, while for a [111] crystal psi = 62 pct. The EBSD analysis of deformed specimens showed that despite such a large local strain the [001] crystals did not recrystallize, while a less deformed [111] crystal totally recrystallized within the necking zone. The recrystallization degree was found to be correlated with deformation behavior as well as with dwell time at high temperature. From the analysis of the obtained results (creep anisotropy, stress dependence of the creep rate, traces of shear deformation, and TEM observations), it was concluded that the main strain contribution resulted from &lt;01-1&gt;{111} octahedral slip.</abstract>
    <parentTitle language="deu">Metallurgical and materials transactions A</parentTitle>
    <identifier type="doi">10.1007/s11661-018-4729-6</identifier>
    <identifier type="issn">1073-5623</identifier>
    <identifier type="issn">1543-1940</identifier>
    <enrichment key="eventName">3rd European Conference on Superalloys (‘Eurosuperalloys 2018’)</enrichment>
    <enrichment key="eventPlace">Oxford, UK</enrichment>
    <enrichment key="eventStart">9.9.2018</enrichment>
    <enrichment key="eventEnd">13.9.2018</enrichment>
    <enrichment key="date_peer_review">17.08.2018</enrichment>
    <author>A. Epishin</author>
    <author>Bernard Fedelich</author>
    <author>Gert Nolze</author>
    <author>Sina Schriever</author>
    <author>Titus Feldmann</author>
    <author>M. Farzik Ijaz</author>
    <author>B. Viguier</author>
    <author>D. Poquillon</author>
    <author>Y. Le Bouar</author>
    <author>A. Ruffini</author>
    <author>A. Finel</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Single-crystal</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Superalloy</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Creep</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Isostatic hot pressing (HIP)</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>54220</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>14</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>204</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Dislocations interacting with a pore in an elastically anisotropic single crystal nickel-base superalloy during hot isostatic pressing</title>
    <abstract language="eng">The formation of pores in CMSX-4 nickel based superalloys is detrimental to the service life of the material. A way to avoid the problem is to treat the superalloys under Hot Isostatic Pressing (HIP), which enables a large volume fraction of pores to be annihilated. This paper aims to understand the contribution of plastic activity related to the gliding of dislocations on the pore annihilation. Simulations based on a phase-field model of dislocation are performed and make it possible to consider the strong anisotropy of the CMSX-4 under HIP conditions in conjunction to the strong elastic heterogeneity introduced by the pore. For pores with a radius of few micrometers, it is shown that edge parts of dislocation lines that present an extra half atomic plane oriented towards the pore are stacked above and under it in the direction which is perpendicular to their slip-planes, causing an increase of the number of dislocation along the four octahedral directions of the FCC single crystal which intersect the pore center. Results are streamlined within the isotropic elastic theory of dislocations. Effects of elastic anisotropy and dislocation reactions are also investigated in order to specify what would be the dislocation configuration around a pore in CMSX-4 under HIP conditions. Notably, the elastic anisotropy is shown to significantly modify the arrangement of dislocations close to the pore equator. Simulations also allow for the characterization of pore/dislocation interactions when dislocations are involved in Low Angle Boundaries as experimentally observed.</abstract>
    <parentTitle language="eng">Computational materials science</parentTitle>
    <identifier type="issn">0927-0256</identifier>
    <identifier type="doi">10.1016/j.commatsci.2021.111118</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">04.07.2022</enrichment>
    <author>A. Ruffini</author>
    <author>Y. Le Bouar</author>
    <author>A. Finel</author>
    <author>A. I. Epishin</author>
    <author>Bernard Fedelich</author>
    <author>Titus Feldmann</author>
    <author>B. Viguier</author>
    <author>D. Poquillon</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>HIP</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Superalloys</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Dislocation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pore</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Phase-field</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">5 Werkstofftechnik</collection>
    <collection role="institutes" number="">5.2 Metallische Hochtemperaturwerkstoffe</collection>
    <collection role="institutes" number="">5.5 Materialmodellierung</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>
</export-example>
