| Kinematic and isotropic strain hardening in copper with highly aligned nanoscale twins | |
| Wang, Hao1; You, Zesheng1; Lu, Lei2 | |
| Corresponding Author | You, Zesheng(zsyou@njust.edu.cn) |
| 2018 | |
| Source Publication | MATERIALS RESEARCH LETTERS
 |
| ISSN | 2166-3831 |
| Volume | 6Issue:6Pages:333-338 |
| Abstract | 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. |
| Keyword | Nanotwins back stress kinematic hardening strain rate effect threading dislocations |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000432342300005 |
| Publisher | TAYLOR & FRANCIS INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/128394 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | You, Zesheng |
| Affiliation | 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 |
| 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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