Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K

doi:10.1016/j.msea.2018.10.094

IMR OpenIR

	Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K
	Sun, S. J.1,2; Tian, Y. Z.1; Lin, H. R.1,2; Yang, H. J.1; Dong, X. G.3; Wang, Y. H.4; Zhang, Z. F.1,2
通讯作者	Tian, Y. Z.(yztian@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2019-01-07
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	740 页码:336-341
摘要	CoCrFeMnNi high-entropy alloys (HEAs) with partially recrystallized (PR) structure were fabricated by cold rolling and annealing. The microstructures were characterized and the tensile properties were tested at 77 K and 293 K, respectively. In contrast to the early necking at 293 K, an ultrahigh yield strength of 1692 MPa and a considerable uniform elongation of 10.3% were obtained at 77 K. The notable uniform elongation at 77 K can be attributed to the enhanced strain-hardening capability via introducing multiple deformation mechanisms in the recrystallized grains. This work provides a strategy to design high-strength high-ductility HEM for applications at cryogenic environments.
关键词	High-entropy alloy (HEA) Recrystallization Deformation twins Yield strength Elongation
资助者	National Natural Science Foundation of China (NSFC) ; Bureau Shenyang science and technology
DOI	10.1016/j.msea.2018.10.094
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] ; Bureau Shenyang science and technology[17-107-6-00]
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:000453494500034
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：76[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/321006/130908
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, Shenyang Natl Lab Mat Sci, 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.Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Liaoning, Peoples R China 4.Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Strip, Qinhuangdao 066004, Peoples R China
推荐引用方式 GB/T 7714	Sun, S. J.,Tian, Y. Z.,Lin, H. R.,et al. Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,740:336-341.
APA	Sun, S. J..,Tian, Y. Z..,Lin, H. R..,Yang, H. J..,Dong, X. G..,...&Zhang, Z. F..(2019).Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,740,336-341.
MLA	Sun, S. J.,et al."Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 740(2019):336-341.