Shear response of the Sigma 11, < 1 1 0 > {131} symmetric tilt grain boundary studied by molecular dynamics

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	Shear response of the Sigma 11, < 1 1 0 > {131} symmetric tilt grain boundary studied by molecular dynamics
	L. Wan; S. Q. Wang
	2009
发表期刊	Modelling and Simulation in Materials Science and Engineering
ISSN	0965-0393
卷号	17 期号:4
摘要	The deformation behavior of Al and Cu bicrystals with the Sigma 11, < 1 1 0 > {1 3 1} symmetric tilt grain boundary (STGB) under pure shear has been studied by molecular dynamics with embedded-atom method interatomic potentials. The simulated results indicate that the plastic strain of the bicrystals can be accommodated by GB migration coupled shear deformation or GB sliding, depending on the shear direction. Detailed study reveals that both the GB coupling motion and the GB sliding can be rationalized by the GB disconnection mechanism. The calculated coupling factors agree well with the vertical bar(b) over right arrow vertical bar/h ratios of the responsible disconnections. Based on these results, a shear-direction-dependent deformation behavior of this GB is proposed by placing special emphasis on the dominant role of the GB disconnections with a Burger's vector of the (1/22) < 4 7 1 > type.
部门归属	[wan, liang; wang, shaoqing] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;wan, l (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;lwan@imr.ac.cn
关键词	Mechanical-behavior Sliding Resistance Room-temperature Dislocations Aluminum Deformation Migration Motion Al Defects
URL	查看原文
WOS记录号	WOS:000266373500009
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32336
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Wan,S. Q. Wang. Shear response of the Sigma 11, < 1 1 0 > {131} symmetric tilt grain boundary studied by molecular dynamics[J]. Modelling and Simulation in Materials Science and Engineering,2009,17(4).
APA	L. Wan,&S. Q. Wang.(2009).Shear response of the Sigma 11, < 1 1 0 > {131} symmetric tilt grain boundary studied by molecular dynamics.Modelling and Simulation in Materials Science and Engineering,17(4).
MLA	L. Wan,et al."Shear response of the Sigma 11, < 1 1 0 > {131} symmetric tilt grain boundary studied by molecular dynamics".Modelling and Simulation in Materials Science and Engineering 17.4(2009).