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Temperature-dependent tensile properties of ultrafine-grained C-doped CoCrFeMnNi high-entropy alloy
Tian, Yan-Zhong1; Peng, Si-Yuan1; Chen, Shang-Feng1; Gu, Zi-Jian1; Yang, Yang1; Shang, Xiu-Ling2; Deng, Guan-Yu3; Su, Li-Hong3; Sun, Shi-Jie4
Corresponding AuthorTian, Yan-Zhong(tianyanzhong@mail.neu.edu.cn) ; Sun, Shi-Jie(sjsun16b@imr.ac.cn)
2022-04-12
Source PublicationRARE METALS
ISSN1001-0521
Pages9
AbstractMetallic 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.
KeywordHigh-entropy alloy Temperature Ductility Strength Ultrafine grain
Funding OrganizationFundamental Research Funds for the Central Universities ; IMR Innovation Fund
DOI10.1007/s12598-022-01972-9
Indexed BySCI
Language英语
Funding ProjectFundamental Research Funds for the Central Universities[N2102008] ; IMR Innovation Fund[2021-PY16]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000780750800002
PublisherNONFERROUS METALS SOC CHINA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172988
Collection中国科学院金属研究所
Corresponding AuthorTian, Yan-Zhong; Sun, Shi-Jie
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China
2.Innovat Ctr GD Midea Air Conditioning Equipment C, Foshan 528311, Peoples R China
3.Univ Wollongong, Sch Mech Mat Mechatron & Biomed Engn, Wollongong, NSW 2500, Australia
4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
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.
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