| In situ atomic-scale observation of grain size and twin thickness effect limit in twin-structural nanocrystalline platinum | |
| Wang, Lihua1; Du, Kui2; Yang, Chengpeng1; Teng, Jiao3; Fu, Libo1; Guo, Yizhong1; Zhang, Ze4; Han, Xiaodong1 | |
| Corresponding Author | Zhang, Ze(zezhang@zju.edu.cn) ; Han, Xiaodong(xdhan@bjut.edu.cn) |
| 2020-03-03 | |
| Source Publication | NATURE COMMUNICATIONS
 |
| ISSN | 2041-1723 |
| Volume | 11Issue:1Pages:9 |
| Abstract | Twin-thickness-controlled plastic deformation mechanisms are well understood for submicron-sized twin-structural polycrystalline metals. However, for twin-structural nanocrystalline metals where both the grain size and twin thickness reach the nanometre scale, how these metals accommodate plastic deformation remains unclear. Here, we report an integrated grain size and twin thickness effect on the deformation mode of twin-structural nanocrystalline platinum. Above a similar to 10nm grain size, there is a critical value of twin thickness at which the full dislocation intersecting with the twin plane switches to a deformation mode that results in a partial dislocation parallel to the twin planes. This critical twin thickness value varies from similar to 6 to 10nm and is grain size-dependent. For grain sizes between similar to 10 to 6nm, only partial dislocation parallel to twin planes is observed. When the grain size falls below 6nm, the plasticity switches to grain boundary-mediated plasticity, in contrast with previous studies, suggesting that the plasticity in twin-structural nanocrystalline metals is governed by partial dislocation activities. |
| Funding Organization | Basic Science Center Program for Multiphase Evolution in Hypergravity of the National Natural Science Foundation of China ; Beijing Outstanding Young Scientists Projects ; NSFC ; Beijing Natural Science Foundation ; 111 project ; Fok Ying-Tong Education Foundation of China ; Australian Research Council |
| DOI | 10.1038/s41467-020-14876-y |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Basic Science Center Program for Multiphase Evolution in Hypergravity of the National Natural Science Foundation of China[51988101] ; Beijing Outstanding Young Scientists Projects[BJJWZYJH01201910005018] ; NSFC[11722429] ; NSFC[51771104] ; NSFC[91860202] ; Beijing Natural Science Foundation[Z180014] ; 111 project[DB18015] ; Fok Ying-Tong Education Foundation of China[151006] ; Australian Research Council[DP190102243] |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| WOS ID | WOS:000519260700002 |
| Publisher | NATURE PUBLISHING GROUP |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/137693 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Ze; Han, Xiaodong |
| Affiliation | 1.Beijing Univ Technol, Beijing Key Lab Microstruct & Properties Adv Mat, Beijing 100022, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China 4.Zhejiang Univ, Dept Mat Sci, Hangzhou 310008, Zhejiang, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Lihua,Du, Kui,Yang, Chengpeng,et al. In situ atomic-scale observation of grain size and twin thickness effect limit in twin-structural nanocrystalline platinum[J]. NATURE COMMUNICATIONS,2020,11(1):9. |
| APA | Wang, Lihua.,Du, Kui.,Yang, Chengpeng.,Teng, Jiao.,Fu, Libo.,...&Han, Xiaodong.(2020).In situ atomic-scale observation of grain size and twin thickness effect limit in twin-structural nanocrystalline platinum.NATURE COMMUNICATIONS,11(1),9. |
| MLA | Wang, Lihua,et al."In situ atomic-scale observation of grain size and twin thickness effect limit in twin-structural nanocrystalline platinum".NATURE COMMUNICATIONS 11.1(2020):9. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment