期刊
MATERIALS LETTERS
卷 185, 期 -, 页码 1-4出版社
ELSEVIER
DOI: 10.1016/j.matlet.2016.08.088
关键词
High entropy alloy; Recrystallization; Phase transformation; Sigma phase
资金
- Russian Science Foundation [14-19-01104]
- Russian Science Foundation [14-19-01104] Funding Source: Russian Science Foundation
There is a strong belief that the CoCrFeNiMn alloy is an example of high entropy alloy with single disordered solid solution structure. Recently it was challenged by the demonstration of second phases in the alloy after low-temperature annealing; however, specific processing conditions (prolonged annealing or severe plastic deformation prior to annealing) were used to cause their formation. In this letter, we report the formation of Cr-rich second phases with tetragonal (sigma phase) and bcc structures in the CoCr-FeNiMn alloy after room or cryogenic temperature rolling to 80% strain thickness and further annealing at 600-800 degrees C for 1 h. (C) 2016 Elsevier B.V. All rights reserved.
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