中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 非线性力学国家重点实验室
Grain boundary-mediated plasticity accommodating the cracking process in nanograined gold: In situ observations and simulations

文献类型：期刊论文

作者Yang Xu-Sheng2,3; Yuan Shuqing3; Fu Hui3; Wang YJ(王云江)1
刊名SCRIPTA MATERIALIA
出版日期2021-03-15
卷号194页码:6
关键词Nanocrystalline metal Crack propagation Plastic deformation, In situ transmission electron microscope Molecular dynamic simulations
ISSN号1359-6462
DOI10.1016/j.scriptamat.2020.113693
通讯作者Yang, Xu-Sheng(xsyang@polyu.edu.hk) ; Wang, Yun-Jiang(yjwang@imech.ac.cn)
英文摘要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.
分类号一类
资助项目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]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000632783300082
资助机构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
源URL[http://dspace.imech.ac.cn/handle/311007/86347]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China
2.Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen, Peoples R China;
3.Hong Kong Polytech Univ, Dept Ind & Syst Engn, State Key Lab Ultraprecis Machining Technol, Hung Hom,Kowloon, Hong Kong, Peoples R China;
推荐引用方式
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.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。