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Relationship between strength and uniform elongation of metals based on an exponential hardening law
Zhang, Zhenjun1,2; Qu, Zhan1,2; Xu, Ling3; Liu, Rui1; Zhang, Peng1,2; Zhang, Zhefeng1,2; Langdon, Terence G.4
Corresponding AuthorZhang, Zhenjun(zjzhang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
2022-06-01
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume231Pages:14
AbstractAn exponential strain-hardening (ESH) model for single phase metals was established and well verified by systematic experiments on Cu-Al alloys in an earlier study. In this report, several additional significant revelations will be documented for the tensile behaviors of several typical metals. Firstly, a unified interpretation of the well-known five strain-hardening stages is developed by correlating the characteristics of each stage with the parameter n that relates to the dislocation annihilation behavior. Secondly, quantitative relationships among the yield strength (YS), ultimate tensile strength (UTS) and uniform elongation (UE) are established and verified using the tensile experimental results for Cu-Al alloys. Thirdly, the two general principles of the synchronous improvement of strength and uniform elongation (SISUE) effect, such as the composition adjustment and microstructure optimization, are quantitatively revealed by the composition parameter n and a microstructure type parameter eta. Two typical trends of the true UTS-UE curves and two kinds of characteristic strengths are quantitatively revealed and confirmed by the relevant experimental data. Finally, a prediction model of tensile properties is proposed and a corresponding procedure is displayed, which is further verified by the tensile experimental results for Cu-Al alloys. These applications further support the validity and significance of the ESH model. (C)& nbsp;2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordComposition Microstructure Strain hardening Strength Uniform elongation
Funding OrganizationYouth Innova-tion Promotion Association CAS ; National Natural Science Foundation of China (NSFC) ; KC Wong Ed-ucation Foundation ; Chinese Academy of Sciences ; European Research Council under ERC
DOI10.1016/j.actamat.2022.117866
Indexed BySCI
Language英语
Funding ProjectYouth Innova-tion Promotion Association CAS[2021192] ; National Natural Science Foundation of China (NSFC)[51871223] ; National Natural Science Foundation of China (NSFC)[51790482] ; National Natural Science Foundation of China (NSFC)[52130 0 02] ; National Natural Science Foundation of China (NSFC)[52001153] ; KC Wong Ed-ucation Foundation[GJTD-2020-09] ; Chinese Academy of Sciences[174321KYSB20210002] ; European Research Council under ERC[267464-SPDMETALS]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000791323500005
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173990
Collection中国科学院金属研究所
Corresponding AuthorZhang, Zhenjun; Zhang, Zhefeng
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat Fatigue & Fractur, Inst Met Res, Wenhua Rd 73, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Shenyang Inst Engn, Shenyang 110136, Peoples R China
4.Univ Southampton, Dept Mech Engn, Southampton SO17 1BJ, Hants, England
Recommended Citation
GB/T 7714
Zhang, Zhenjun,Qu, Zhan,Xu, Ling,et al. Relationship between strength and uniform elongation of metals based on an exponential hardening law[J]. ACTA MATERIALIA,2022,231:14.
APA Zhang, Zhenjun.,Qu, Zhan.,Xu, Ling.,Liu, Rui.,Zhang, Peng.,...&Langdon, Terence G..(2022).Relationship between strength and uniform elongation of metals based on an exponential hardening law.ACTA MATERIALIA,231,14.
MLA Zhang, Zhenjun,et al."Relationship between strength and uniform elongation of metals based on an exponential hardening law".ACTA MATERIALIA 231(2022):14.
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