Temperature-dependent tensile properties of ultrafine-grained C-doped CoCrFeMnNi high-entropy alloy

doi:10.1007/s12598-022-01972-9

CORC > 金属研究所 > 中国科学院金属研究所

	Temperature-dependent tensile properties of ultrafine-grained C-doped CoCrFeMnNi high-entropy alloy
	Tian, Yan-Zhong 2; Peng, Si-Yuan 2; Chen, Shang-Feng 2; Gu, Zi-Jian 2; Yang, Yang 2; Shang, Xiu-Ling 3; Deng, Guan-Yu 1; Su, Li-Hong 1; Sun, Shi-Jie 4
刊名	RARE METALS
	2022-04-12
页码	9
关键词	High-entropy alloy Temperature Ductility Strength Ultrafine grain
ISSN号	1001-0521
DOI	10.1007/s12598-022-01972-9
通讯作者	Tian, Yan-Zhong(tianyanzhong@mail.neu.edu.cn) ; Sun, Shi-Jie(sjsun16b@imr.ac.cn)
英文摘要	Metallic materials can be strengthened by various kinds of plastic deformation strategies. However, the deformed materials suffer poor ductility and thermal stability due to the high-density defects. In this work, we prepared fully recrystallized ultrafine-grained (UFG) 1%C-CoCrFeMnNi high-entropy alloy (C-HEA) through cold rolling and annealing process. Quasi-static tensile tests were performed at temperatures between 77 and 823 K. Deformation microstructures of the samples after tensile tests were characterized, and deformation mechanisms were discussed. There is a transition of deformation mechanisms from twinning and dislocation slip to dislocation slip and grain boundary sliding with temperature increasing. The UFG C-HEA exhibits balanced strength and ductility from the cryogenic temperature to high temperatures, indicating highly adaptive microstructure and mechanical properties. The strength and uniform elongation of the UFG C-HEA decrease monotonously with temperature increasing, but the elongation to failure exhibits the lowest value at the medium temperature. The grain boundary sliding is supposed to assist the unconventionally high elongation at 823 K.
资助项目	Fundamental Research Funds for the Central Universities[N2102008] ; IMR Innovation Fund[2021-PY16]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NONFERROUS METALS SOC CHINA
WOS记录号	WOS:000780750800002
资助机构	Fundamental Research Funds for the Central Universities ; IMR Innovation Fund
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172987]
专题	金属研究所_中国科学院金属研究所
通讯作者	Tian, Yan-Zhong; Sun, Shi-Jie
作者单位	1.Univ Wollongong, Sch Mech Mat Mechatron & Biomed Engn, Wollongong, NSW 2500, Australia 2.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China 3.Innovat Ctr GD Midea Air Conditioning Equipment C, Foshan 528311, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tian, Yan-Zhong,Peng, Si-Yuan,Chen, Shang-Feng,et al. Temperature-dependent tensile properties of ultrafine-grained C-doped CoCrFeMnNi high-entropy alloy[J]. RARE METALS,2022:9.
APA	Tian, Yan-Zhong.,Peng, Si-Yuan.,Chen, Shang-Feng.,Gu, Zi-Jian.,Yang, Yang.,...&Sun, Shi-Jie.(2022).Temperature-dependent tensile properties of ultrafine-grained C-doped CoCrFeMnNi high-entropy alloy.RARE METALS,9.
MLA	Tian, Yan-Zhong,et al."Temperature-dependent tensile properties of ultrafine-grained C-doped CoCrFeMnNi high-entropy alloy".RARE METALS (2022):9.