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

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	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.
刊名	ELSEVIER SCI LTD
	2017-11-05
卷号	133 页码:122-127
关键词	High-entropy Alloy (Hea) Ultrafine Grain Hall-petch Relationship Strength Ductility
ISSN号	0264-1275
英文摘要	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.
学科主题	Materials Science, Multidisciplinary
语种	英语
资助机构	National Natural Science Foundation of China (NSFC) [51331007, 51501198]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78989]
专题	金属研究所_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.