Enhanced strength and ductility of bulk CoCrFeMnNi high entropy alloy having fully recrystallized ultrafine-grained structure

IMR OpenIR

	Enhanced strength and ductility of bulk CoCrFeMnNi high entropy alloy having fully recrystallized ultrafine-grained structure
	Sun, S. J.; Tian, Y. Z.; Lin, H. R.; Dong, X. G.; Wang, Y. H.; Zhang, Z. J.; Zhang, Z. F.; Tian, YZ; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
	2017-11-05
发表期刊	ELSEVIER SCI LTD
ISSN	0264-1275
卷号	133 页码:122-127
摘要	A high efficient magnetic levitation melting technique was reported for fabricating bulk equiatomic CoCrFeMnNi high-entropy alloy (HEA) ingot with a diameter of 110 mm. The bulk ingot can be either forged or rolled. In particular, fully recrystallized ultrafine-grained (UFG) HEA with a minimum grain size of 503 +/- 181 nm was successfully obtained through a simple cold rolling and annealing process. The tensile properties of the HEA were studied by changing the grain size from the UFG regime to the coarse-grained regime. The UFG HEA exhibited a good balance of strength and ductility due to the low stacking fault energy. The linear Hall-Petch relationship was well fitted when the grain sizes range from 503 nm to 88.9 mu m. (C) 2017 Elsevier Ltd. All rights reserved.; A high efficient magnetic levitation melting technique was reported for fabricating bulk equiatomic CoCrFeMnNi high-entropy alloy (HEA) ingot with a diameter of 110 mm. The bulk ingot can be either forged or rolled. In particular, fully recrystallized ultrafine-grained (UFG) HEA with a minimum grain size of 503 +/- 181 nm was successfully obtained through a simple cold rolling and annealing process. The tensile properties of the HEA were studied by changing the grain size from the UFG regime to the coarse-grained regime. The UFG HEA exhibited a good balance of strength and ductility due to the low stacking fault energy. The linear Hall-Petch relationship was well fitted when the grain sizes range from 503 nm to 88.9 mu m. (C) 2017 Elsevier Ltd. All rights reserved.
部门归属	[sun, s. j. ; tian, y. z. ; lin, h. r. ; zhang, z. j. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [sun, s. j. ; lin, h. r. ; zhang, z. f.] univ sci & technol china, sch mat sci & engn, hefei 230026, anhui, peoples r china ; [dong, x. g.] shenyang ligong univ, sch mat sci & engn, shenyang 110159, liaoning, peoples r china ; [wang, y. h.] yanshan univ, natl engn res ctr equipment & technol cold strip, qinhuangdao 066004, peoples r china
关键词	High-entropy Alloy (Hea) Ultrafine Grain Hall-petch Relationship Strength Ductility
学科领域	Materials Science, Multidisciplinary
资助者	National Natural Science Foundation of China (NSFC) [51331007, 51501198]
收录类别	SCI
语种	英语
WOS记录号	WOS:000411364800013
引用统计	被引频次：366[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/321006/78989
专题	中国科学院金属研究所
通讯作者	Tian, YZ; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Sun, S. J.,Tian, Y. Z.,Lin, H. R.,et al. Enhanced strength and ductility of bulk CoCrFeMnNi high entropy alloy having fully recrystallized ultrafine-grained structure[J]. ELSEVIER SCI LTD,2017,133:122-127.
APA	Sun, S. J..,Tian, Y. Z..,Lin, H. R..,Dong, X. G..,Wang, Y. H..,...&Zhang, ZF .(2017).Enhanced strength and ductility of bulk CoCrFeMnNi high entropy alloy having fully recrystallized ultrafine-grained structure.ELSEVIER SCI LTD,133,122-127.
MLA	Sun, S. J.,et al."Enhanced strength and ductility of bulk CoCrFeMnNi high entropy alloy having fully recrystallized ultrafine-grained structure".ELSEVIER SCI LTD 133(2017):122-127.