Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins

doi:10.1080/21663831.2018.1455752

IMR OpenIR

	Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins
	Wang, Hao 1; You, Zesheng 1; Lu, Lei 2
通讯作者	You, Zesheng(zsyou@njust.edu.cn)
	2018
发表期刊	MATERIALS RESEARCH LETTERS
ISSN	2166-3831
卷号	6 期号:6 页码:333-338
摘要	The kinematic and isotropic strain hardening was investigated in columnar-grained copper with preferentially oriented nanoscale twins deformed at two different strain rates of 5 x 10(-5) and 5 x 10(-3) s(-1). A significant back stress is caused majorly by threading dislocation pile-up and accumulation at the grain boundaries and is strain rate independent. The isotropic hardening associated with an increment in the local effective stress stems from dislocation storage at twin boundaries, and a high strain rate is beneficial for enhancing isotropic strain hardening and tensile ductility. [GRAPHICS] IMPACT STATEMENT Long-range back stress was detected to develop during plastic deformation of nanotwinned structures, majorly caused by pile-up and accumulation of threading dislocations at grain boundary regions.
关键词	Nanotwins back stress kinematic hardening strain rate effect threading dislocations
资助者	National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities, China ; Natural Science Foundation of Jiangsu Province, China
DOI	10.1080/21663831.2018.1455752
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFA0204402] ; National Natural Science Foundation of China (NSFC)[51401211] ; National Natural Science Foundation of China (NSFC)[51420105001] ; National Natural Science Foundation of China (NSFC)[51371171] ; National Natural Science Foundation of China (NSFC)[51471172] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities, China[30915012104] ; Natural Science Foundation of Jiangsu Province, China[BK20161498]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000432342300005
出版者	TAYLOR & FRANCIS INC
引用统计	被引频次：39[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/321006/128394
专题	中国科学院金属研究所
通讯作者	You, Zesheng
作者单位	1.Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, 200 Xiaolingwei St, Nanjing 210094, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hao,You, Zesheng,Lu, Lei. Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins[J]. MATERIALS RESEARCH LETTERS,2018,6(6):333-338.
APA	Wang, Hao,You, Zesheng,&Lu, Lei.(2018).Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins.MATERIALS RESEARCH LETTERS,6(6),333-338.
MLA	Wang, Hao,et al."Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins".MATERIALS RESEARCH LETTERS 6.6(2018):333-338.