| |||||||
| Grain boundary-mediated plasticity accommodating the cracking process in nanograined gold: In situ observations and simulations | |
Yang Xu-Sheng1,2; Yuan Shuqing1; Fu Hui1; Wang YJ(王云江)3
| |
| Corresponding Author | Yang, Xu-Sheng(xsyang@polyu.edu.hk) ; Wang, Yun-Jiang(yjwang@imech.ac.cn) |
| Source Publication | SCRIPTA MATERIALIA
 |
| 2021-03-15 | |
| Volume | 194Pages:6 |
| ISSN | 1359-6462 |
| Abstract | In this study, the underlying atomic-scale plastic deformation mechanisms responsible for the crack propagation process in nanograined gold thin film with an average grain size of similar to 10 nm (ranging from similar to 2 nm to similar to 22 nm) is investigated by the in situ high-resolution transmission electron microscope observations (i.e., a homemade device with atomic force microscope inside transmission electron microscope) and atomistic molecular dynamic simulations. The real-time results based on the experimental observations and simulations uncover consistently that the crack propagation in nanograined gold thin film is accommodated by the grain boundary-mediated plasticity, which may result in the grain coalescence between neighboring nanograins. Furthermore, we find that the grain boundary-mediated plasticity is grain size-dependent, i.e., GB dislocation activities-induced grain rotation in relative larger grains and GB migration in relative smaller grains in comparison with a critical grain size of similar to 10 nm. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Nanocrystalline metal Crack propagation Plastic deformation, In situ transmission electron microscope Molecular dynamic simulations |
| DOI | 10.1016/j.scriptamat.2020.113693 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000632783300082 |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | National Natural Science Foundation of China Projects[51701171] ; National Natural Science Foundation of China Projects[51971187] ; PolyU project[G-YBZ3] ; PolyU project[4-BCER] ; NSCF[11672299] ; NSCF[12072344] ; National Key Research and Development Program of China[2017YFB0701502] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017025] |
| Funding Organization | National Natural Science Foundation of China Projects ; PolyU project ; NSCF ; National Key Research and Development Program of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| Classification | 一类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/86348 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Hong Kong Polytech Univ, Dept Ind & Syst Engn, State Key Lab Ultraprecis Machining Technol, Hung Hom,Kowloon, Hong Kong, Peoples R China; 2.Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China |
| Recommended Citation GB/T 7714 | Yang Xu-Sheng,Yuan Shuqing,Fu Hui,et al. Grain boundary-mediated plasticity accommodating the cracking process in nanograined gold: In situ observations and simulations[J]. SCRIPTA MATERIALIA,2021,194:6. |
| APA | Yang Xu-Sheng,Yuan Shuqing,Fu Hui,&王云江.(2021).Grain boundary-mediated plasticity accommodating the cracking process in nanograined gold: In situ observations and simulations.SCRIPTA MATERIALIA,194,6. |
| MLA | Yang Xu-Sheng,et al."Grain boundary-mediated plasticity accommodating the cracking process in nanograined gold: In situ observations and simulations".SCRIPTA MATERIALIA 194(2021):6. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021145.pdf（4682KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment