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

CORC > 金属研究所 > 中国科学院金属研究所

	Shear response of the Sigma 11, < 1 1 0 > {131} symmetric tilt grain boundary studied by molecular dynamics
	L. Wan ; S. Q. Wang
刊名	Modelling and Simulation in Materials Science and Engineering
	2009
卷号	17 期号:4
关键词	mechanical-behavior sliding resistance room-temperature dislocations aluminum deformation migration motion al defects
ISSN号	0965-0393
中文摘要	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.
原文出处	://WOS:000266373500009
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32336]
专题	金属研究所_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).