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

doi:10.1016/j.scriptamat.2019.01.012

IMR OpenIR

	Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy
	Sun, S. J.1,2; Tian, Y. Z.3; Lin, H. R.1,2; Lu, S.4; Yang, H. J.1; Zhang, Z. F.1,2
通讯作者	Tian, Y. Z.(tianyanzhong@mail.neu.edu.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2019-04-01
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	163 页码:111-115
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.
关键词	High-entropy alloy Prestrain Temperature Yield strength Elongation
资助者	National Natural Science Foundation of China (NSFC)
DOI	10.1016/j.scriptamat.2019.01.012
收录类别	SCI
语种	英语
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
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000458940000023
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：69[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/131883
专题	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.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China 4.Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden
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.