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

doi:10.1080/21663831.2018.1455752

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	Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins
	Wang, H ; You, ZS ; Lu, L 1
刊名	MATERIALS RESEARCH LETTERS
	2018-02-07
卷号	6 期号:6 页码:333-338
关键词	Nanotwins back stress kinematic hardening strain rate effect threading dislocations
ISSN号	2166-3831
DOI	10.1080/21663831.2018.1455752
英文摘要	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.
学科主题	Materials Science, Multidisciplinary
语种	英语
WOS记录号	WOS:000432342300005
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80256]
专题	金属研究所_中国科学院金属研究所
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, H,You, ZS,Lu, L. Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins[J]. MATERIALS RESEARCH LETTERS,2018,6(6):333-338.
APA	Wang, H,You, ZS,&Lu, L.(2018).Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins.MATERIALS RESEARCH LETTERS,6(6),333-338.
MLA	Wang, H,et al."Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins".MATERIALS RESEARCH LETTERS 6.6(2018):333-338.