Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy

doi:10.1016/j.scriptamat.2019.01.012

CORC > 金属研究所 > 中国科学院金属研究所

	Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy
	Sun, S. J.1,3; Tian, Y. Z.4; Lin, H. R.1,3; Lu, S.2; Yang, H. J.3; Zhang, Z. F.1,3
刊名	SCRIPTA MATERIALIA
	2019-04-01
卷号	163 页码:111-115
关键词	High-entropy alloy Prestrain Temperature Yield strength Elongation
ISSN号	1359-6462
DOI	10.1016/j.scriptamat.2019.01.012
通讯作者	Tian, Y. Z.(tianyanzhong@mail.neu.edu.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
英文摘要	CoCrFeMnNi high-entropy alloy (HEA) exhibits excellent combination of strength and ductility, but low yield strength. In order to ameliorate the mechanical properties, prestrain was applied in this work. The HEA prestrained at 77 K possesses higher yield strength and uniform elongation than the HEA prestrained at 293 K, indicating that the trade-off relationship between strength and ductility can be broken by modulating the prestrain history. Furthermore, the yield point phenomenon was disappeared after prestrained at 77 K. This can be related to the density and distribution of dislocations as imposed in the prestrain process at 293 K and 77 K. (C) 2019 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China (NSFC)[51501198] ; National Natural Science Foundation of China (NSFC)[51331007]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000458940000023
资助机构	National Natural Science Foundation of China (NSFC)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/131877]
专题	金属研究所_中国科学院金属研究所
通讯作者	Tian, Y. Z.; Zhang, Z. F.
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 2.Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden 3.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, Shenyang 110016, Liaoning, Peoples R China 4.Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Sun, S. J.,Tian, Y. Z.,Lin, H. R.,et al. Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy[J]. SCRIPTA MATERIALIA,2019,163:111-115.
APA	Sun, S. J.,Tian, Y. Z.,Lin, H. R.,Lu, S.,Yang, H. J.,&Zhang, Z. F..(2019).Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy.SCRIPTA MATERIALIA,163,111-115.
MLA	Sun, S. J.,et al."Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy".SCRIPTA MATERIALIA 163(2019):111-115.