Characterizations of size effect and overall mechanical behavior of nanocrystalline metals
文献类型：期刊论文
| 作者 | Chen L(陈力); Wei YG(魏悦广)
|
| 刊名 | INTERNATIONAL JOURNAL OF APPLIED MECHANICS
 |
| 出版日期 | 2013-03-01 |
| 卷号 | 5期号:1页码:1350004/1-1350004/20 |
| 通讯作者邮箱 | cchenli@Lnm.imech.ac.cn; ywei@Lnm.imech.ac.cn |
| 关键词 | Intergranular fracture nanocrystalline metal mixed-mode cohesive model finite element method |
| ISSN号 | 1758-8251 |
| 产权排序 | [Chen, Li; Wei, Yueguang] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Chen, L (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 中文摘要 | A systematical study of size effects and mechanical behaviors for the nanocrystalline (nc) metals is performed. The grain boundary fracture process is considered and described by the mixed-mode interface cohesive model. The grain material is characterized by the conventional theory of strain gradient plasticity. In the present investigation, the effects of five important parameters on the overall mechanical behavior are studied systematically, which include the grain size, critical separation strength, energy release rate of interface separation, mixity of separation strength, as well as the mixity of separation energy release rate. A finite element method (FEM) covering the above characteristics within the grain and on the grain boundary is developed. The present results show that the overall strength and ductility of the nc metals strongly depend on the grain boundary features described by the mixed-mode cohesive interface model, and there is a competition of deformation of grain boundary with that of grain interior. |
| 学科主题 | 新型材料的力学问题 |
| 分类号 | 二类 |
| 收录类别 | SCI ; EI |
| 资助信息 | National Basic Research Program of China [2012CB937500]; National Natural Science Foundation of China [11021262, 10932011, 91116003] |
| 原文出处 | http://dx.doi.org/10.1142/S175882511350004X |
| 语种 | 英语 |
| WOS记录号 | WOS:000318307300004 |
| 公开日期 | 2013-06-13 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/47279]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen L,Wei YG. Characterizations of size effect and overall mechanical behavior of nanocrystalline metals[J]. INTERNATIONAL JOURNAL OF APPLIED MECHANICS,2013,5(1):1350004/1-1350004/20. |
| APA | Chen L,&Wei YG.(2013).Characterizations of size effect and overall mechanical behavior of nanocrystalline metals.INTERNATIONAL JOURNAL OF APPLIED MECHANICS,5(1),1350004/1-1350004/20. |
| MLA | Chen L,et al."Characterizations of size effect and overall mechanical behavior of nanocrystalline metals".INTERNATIONAL JOURNAL OF APPLIED MECHANICS 5.1(2013):1350004/1-1350004/20. |
入库方式： OAI收割
来源：力学研究所
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