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Orientation-related twinning and dislocation glide in a cantor high entropy alloy at room and cryogenic temperature studied by in situ TEM straining
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SYSNO ASEP 0544795 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Orientation-related twinning and dislocation glide in a cantor high entropy alloy at room and cryogenic temperature studied by in situ TEM straining Author(s) Oliveros, D. (FR)
Fraczkiewicz, A. (FR)
Dlouhý, Antonín (UFM-A) RID, ORCID
Zhang, C. (DE)
Song, HX. (DE)
Sandfeld, S. (DE)
Legros, M. (FR)Number of authors 7 Article number 124955 Source Title Materials Chemistry and Physics. - : Elsevier - ISSN 0254-0584
Roč. 272, NOV (2021)Number of pages 8 s. Language eng - English Country CH - Switzerland Keywords stacking-fault energies ; 60-degrees dislocations ; mechanical-properties ; stainless-steel ; plasticity ; In situ TEM ; High entropy alloy ; Plasticity ; Twinning ; Dislocation Subject RIV JG - Metallurgy OECD category Materials engineering R&D Projects LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UFM-A - RVO:68081723 UT WOS 000681656900005 EID SCOPUS 85110557036 DOI 10.1016/j.matchemphys.2021.124955 Annotation In situ straining experiments were performed in a TEM on an equimolar CoCrFeMnNi (Cantor) high entropy alloy at room and cryogenic temperature. Perfect and partial dislocation activity were recorded in both cases. Twinning directly follows the development of partial dislocation shearing that has various origins (perfect dislocation splitting, anchoring). It is shown that, although twinning is more frequently observed at liquid nitrogen temperature, its prevalence depends mainly on crystal orientation. As a result, twinning and perfect dislocation plasticity are likely to occur jointly in random oriented polycrystals, even at early stages of deformation. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2022 Electronic address https://www.sciencedirect.com/science/article/pii/S0254058421007380?via%3Dihub
Number of the records: 1