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Enhancing dislocation emission in nanocrystalline materials through shear-coupled migration of grain boundaries
Li JJ(李建军); Soh, AK; Wu XL(武晓雷); Li, JJ (reprint author), Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Dept Engn Mech, Xian 710072, Shanxi, Peoples R China.
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
2014-04-17
Volume601Pages:153-158
ISSN0921-5093
AbstractA theoretical model has been developed to illustrate the effect of shear-coupled migration of grain boundaries on dislocation emission in nanocrystalline materials. The energy characteristics and critical shear stress tau(c) that is required to initiate the emission process were determined. The results obtained show that the dislocation emission can be considerably enhanced as shear-coupled migration was the dominating process; a critical coupling factor that corresponded to the minimum tau(c), which led to an optimal dislocation emission, was also discovered. The proposed model has also been quantitatively validated by the existing molecular dynamics simulations. (C) 2014 Elsevier B.V. All rights reserved.
KeywordNanocrystalline Materials Dislocations Shear-coupled Migration Of Grain Boundaries Strength And Ductility
Subject AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000334132000020
Funding OrganizationJ. Li acknowledges the financial support of Start-up funding for the Newly-recruited High-level Talents of Northwestern Polytechnical University, People's Republic of China. A.K. Soh acknowledges the support of eScience funding (Project no.: 06-02-10-SF0195) from MOSTI (Malaysia) and the Advanced Engineering Programme and School of Engineering, Monash University Sunway Campus.
DepartmentLNM材料介观力学性能的表征
Classification一类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48838
Collection非线性力学国家重点实验室
Corresponding AuthorLi, JJ (reprint author), Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Dept Engn Mech, Xian 710072, Shanxi, Peoples R China.
Recommended Citation
GB/T 7714
Li JJ,Soh, AK,Wu XL,et al. Enhancing dislocation emission in nanocrystalline materials through shear-coupled migration of grain boundaries[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2014,601:153-158.
APA Li JJ,Soh, AK,Wu XL,&Li, JJ .(2014).Enhancing dislocation emission in nanocrystalline materials through shear-coupled migration of grain boundaries.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,601,153-158.
MLA Li JJ,et al."Enhancing dislocation emission in nanocrystalline materials through shear-coupled migration of grain boundaries".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 601(2014):153-158.
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