Enhancing dislocation emission in nanocrystalline materials through shear-coupled migration of grain boundaries

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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.
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2014-04-17
卷号	601 页码:153-158
ISSN	0921-5093
摘要	A 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.
关键词	Nanocrystalline Materials Dislocations Shear-coupled Migration Of Grain Boundaries Strength And Ductility
学科领域	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000334132000020
项目资助者	J. 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.
课题组名称	LNM材料介观力学性能的表征
论文分区	一类
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/48838
专题	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 710072, Shanxi, Peoples R China.
推荐引用方式 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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