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Relationship between strength and uniform elongation of metals based on an exponential hardening law

文献类型：期刊论文

作者Zhang, Zhenjun3,4; Qu, Zhan3,4; Xu, Ling1; Liu, Rui4; Zhang, Peng3,4; Zhang, Zhefeng3,4; Langdon, Terence G.2
刊名ACTA MATERIALIA
出版日期2022-06-01
卷号231页码:14
ISSN号1359-6454
关键词Composition Microstructure Strain hardening Strength Uniform elongation
DOI10.1016/j.actamat.2022.117866
通讯作者Zhang, Zhenjun(zjzhang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
英文摘要An 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.
资助项目Youth 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研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000791323500005
资助机构Youth 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
源URL[http://ir.imr.ac.cn/handle/321006/173989]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhang, Zhenjun; Zhang, Zhefeng
作者单位1.Shenyang Inst Engn, Shenyang 110136, Peoples R China
2.Univ Southampton, Dept Mech Engn, Southampton SO17 1BJ, Hants, England
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
4.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat Fatigue & Fractur, Inst Met Res, Wenhua Rd 73, Shenyang 110016, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：金属研究所

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