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

文献类型：期刊论文

作者Wang, Hao1; You, Zesheng1; Lu, Lei2
刊名MATERIALS RESEARCH LETTERS
出版日期2018
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
DOI10.1080/21663831.2018.1455752
通讯作者You, Zesheng(zsyou@njust.edu.cn)
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.
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
语种英语
WOS记录号WOS:000432342300005
出版者TAYLOR & FRANCIS INC
资助机构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
源URL[http://ir.imr.ac.cn/handle/321006/128393]  
专题金属研究所_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.

入库方式： OAI收割

来源：金属研究所

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