The potential for ordered grain boundary sliding in nanocrystalline palladium

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	The potential for ordered grain boundary sliding in nanocrystalline palladium
	Y. C. Wang ; D. H. Ping ; D. X. Li
刊名	Philosophical Magazine Letters
	2008
卷号	88 期号:5 页码:343-351
关键词	HRTEM image simulation grain boundary sliding twin boundary molecular statics molecular-dynamics simulation dislocations deformation metals tilt strength motion copper hrem al
ISSN号	0950-0839
中文摘要	In nanocrystalline (nc) materials, the misfit of lattice structures at the junctions of grain boundaries (GBs) generally increases local stresses that can be released by GB sliding. In this article, the sliding behaviors of the ordered Sigma = 3 (111) [110] GB (twin) and Sigma = 11(113) [110]GB in nc palladium have been investigated by means of high-resolution transmission electron microscopy observations and molecular statics calculations. It is found that the twin boundary (TB) can release either large stresses by sliding with a DSC-lattice vector of 1/6 [112] or small stresses by sliding over an imperfect vector. The observed Sigma = 11 GB image is exactly symmetrical from which we can clearly identify no GB sliding along the [332] direction, but we cannot determine a sliding component along the [110] direction. The image simulations indicate that the latter is experimentally unidentifiabl e.
原文出处	://WOS:000256968500004
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/33163]
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	Y. C. Wang,D. H. Ping,D. X. Li. The potential for ordered grain boundary sliding in nanocrystalline palladium[J]. Philosophical Magazine Letters,2008,88(5):343-351.
APA	Y. C. Wang,D. H. Ping,&D. X. Li.(2008).The potential for ordered grain boundary sliding in nanocrystalline palladium.Philosophical Magazine Letters,88(5),343-351.
MLA	Y. C. Wang,et al."The potential for ordered grain boundary sliding in nanocrystalline palladium".Philosophical Magazine Letters 88.5(2008):343-351.