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Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy
Sun, S. J.1,2; Tian, Y. Z.3; Lin, H. R.1,2; Lu, S.4; Yang, H. J.1; Zhang, Z. F.1,2
Corresponding AuthorTian, Y. Z.(tianyanzhong@mail.neu.edu.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
2019-04-01
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume163Pages:111-115
AbstractCoCrFeMnNi high-entropy alloy (HEA) exhibits excellent combination of strength and ductility, but low yield strength. In order to ameliorate the mechanical properties, prestrain was applied in this work. The HEA prestrained at 77 K possesses higher yield strength and uniform elongation than the HEA prestrained at 293 K, indicating that the trade-off relationship between strength and ductility can be broken by modulating the prestrain history. Furthermore, the yield point phenomenon was disappeared after prestrained at 77 K. This can be related to the density and distribution of dislocations as imposed in the prestrain process at 293 K and 77 K. (C) 2019 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
KeywordHigh-entropy alloy Prestrain Temperature Yield strength Elongation
Funding OrganizationNational Natural Science Foundation of China (NSFC)
DOI10.1016/j.scriptamat.2019.01.012
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[51501198] ; National Natural Science Foundation of China (NSFC)[51331007]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000458940000023
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/131883
Collection中国科学院金属研究所
Corresponding AuthorTian, Y. Z.; Zhang, Z. F.
Affiliation1.Chinese Acad Sci, Inst Met Res, 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.Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Liaoning, Peoples R China
4.Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden
Recommended Citation
GB/T 7714
Sun, S. J.,Tian, Y. Z.,Lin, H. R.,et al. Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy[J]. SCRIPTA MATERIALIA,2019,163:111-115.
APA Sun, S. J.,Tian, Y. Z.,Lin, H. R.,Lu, S.,Yang, H. J.,&Zhang, Z. F..(2019).Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy.SCRIPTA MATERIALIA,163,111-115.
MLA Sun, S. J.,et al."Modulating the prestrain history to optimize strength and ductility in CoCrFeMnNi high-entropy alloy".SCRIPTA MATERIALIA 163(2019):111-115.
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