Strong crack blunting by shear-coupled migration of grain boundaries in nanocrystalline materials
文献类型：期刊论文
| 作者 | Li JJ(李建军); Chen SH(陈少华) ; Wu XL(武晓雷); Soh AK; Li, JJ (reprint author), Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Dept Engn Mech, Xian, Shanxi, Peoples R China.
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| 刊名 | Scripta Materialia
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| 出版日期 | 2014-08 |
| 卷号 | 84-85页码:51-54 |
| 关键词 | Nanocrystalline Materials Shear-coupled Migration Of Grain Boundaries Cracks Dislocation Emission Toughening Mechanism |
| ISSN号 | 1359-6462 |
| 产权排序 | [Li, Jianjun] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Dept Engn Mech, Xian, Shanxi, Peoples R China; [Chen, Shaohua; Wu, Xiaolei] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; [Soh, A. K.] Monash Univ Malaysia, Sch Engn, Bandar Sunway, Salangor, Malaysia |
| 文献子类 | Article |
| 英文摘要 | A theoretical model is proposed to illustrate the effect of shear-coupled migration of grain boundaries on the emission of lattice dislocations from a semi-infinite crack tip in nanocrystalline materials. The results obtained show that the shear-coupled migration process is able to considerably enhance the capability of the crack to emit dislocations, thus leading to strong crack blunting. Moreover, the combination of grain boundary migration and dislocation emission can serve as an effective toughening mechanism in nanocrystalline materials. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 学科主题 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 分类号 | 一类 |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000337768000013 |
| 资助机构 | J.L. acknowledges the financial support by the Start-up funding (No. 13GH0316) for the Newly-recruited High-level Talents from Northwestern Polytechnical University, China. S.C. thanks the support from NSFC through Grants #11125211, #11372317 and the 973 Nano-project (2012CB937500). A.K.S. acknowledges the support of the Advanced Engineering Programme and School of Engineering, Monash University Malaysia, as well as the eScience grant (Project No.: 06-02-10-SF0195) provided by the Ministry of Science, Technology and Innovation (MOSTI), Malaysia. |
| 公开日期 | 2014-09-02 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49022]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Li, JJ (reprint author), Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Dept Engn Mech, Xian, Shanxi, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li JJ,Chen SH,Wu XL,et al. Strong crack blunting by shear-coupled migration of grain boundaries in nanocrystalline materials[J]. Scripta Materialia,2014,84-85:51-54. |
| APA | Li JJ,Chen SH,Wu XL,Soh AK,&Li, JJ .(2014).Strong crack blunting by shear-coupled migration of grain boundaries in nanocrystalline materials.Scripta Materialia,84-85,51-54. |
| MLA | Li JJ,et al."Strong crack blunting by shear-coupled migration of grain boundaries in nanocrystalline materials".Scripta Materialia 84-85(2014):51-54. |
入库方式： OAI收割
来源：力学研究所
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