期刊
SCRIPTA MATERIALIA
卷 178, 期 -, 页码 144-149出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.11.022
关键词
High entropy alloys; Dynamic recrystallization; Microbands; Dislocation boundaries
类别
资金
- Australia-India Strategic Research Fund [AISRF53731]
- government of Australian state of Victoria
- VESKI through the Victoria Fellowship
- Australian Research Council's DECRA [DE180100440]
- UNSW Scientia Fellowship schemes
Hot deformation mechanisms and restoration behavior of a single-phase face-centered cubic high entropy alloy was studied. The hot-deformed microstructure consisted of complex shaped deformation/transition bands. For the first time in these alloys, self-screening microband arrays were detected. The microbands were of highly crystallographic nature, i.e., they were aligned with traces of {111} slip planes containing slip systems having the highest or second highest possible Schmid factors. Dynamic recrystallization initiated mainly at the initial grain boundaries through strain-induced boundary migration generally followed by the formation of multiple twinning chains. Also, micro-shear-band induced recrystallization was observed locally, mainly due to strain localization. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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