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

doi:10.1016/j.actamat.2022.117866

IMR OpenIR

	Relationship between strength and uniform elongation of metals based on an exponential hardening law
	Zhang, Zhenjun 1,2; Qu, Zhan 1,2; Xu, Ling 3; Liu, Rui 1; Zhang, Peng 1,2; Zhang, Zhefeng 1,2; Langdon, Terence G.4
通讯作者	Zhang, Zhenjun(zjzhang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
	2022-06-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	231 页码:14
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.
关键词	Composition Microstructure Strain hardening Strength Uniform elongation
资助者	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
DOI	10.1016/j.actamat.2022.117866
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000791323500005
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/173990
专题	中国科学院金属研究所
通讯作者	Zhang, Zhenjun; Zhang, Zhefeng
作者单位	1.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
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.