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Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins
Wang, Hao1; You, Zesheng1; Lu, Lei2
Corresponding AuthorYou, Zesheng(zsyou@njust.edu.cn)
2018
Source PublicationMATERIALS RESEARCH LETTERS
ISSN2166-3831
Volume6Issue:6Pages:333-338
AbstractThe 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.
KeywordNanotwins back stress kinematic hardening strain rate effect threading dislocations
Funding OrganizationNational 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
DOI10.1080/21663831.2018.1455752
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000432342300005
PublisherTAYLOR & FRANCIS INC
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128394
Collection中国科学院金属研究所
Corresponding AuthorYou, Zesheng
Affiliation1.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
Recommended Citation
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.
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