Strong crack blunting by shear-coupled migration of grain boundaries in nanocrystalline materials

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	Strong crack blunting by shear-coupled migration of grain boundaries in nanocrystalline materials
	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.
发表期刊	Scripta Materialia
	2014-08
卷号	84-85 页码:51-54
ISSN	1359-6462
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.
关键词	Nanocrystalline Materials Shear-coupled Migration Of Grain Boundaries Cracks Dislocation Emission Toughening Mechanism
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:000337768000013
项目资助者	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.
课题组名称	LNM仿生材料与固体的微尺度力学
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/311007/49021
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, 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.

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