The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage

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	The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage
	H. Wang; D. S. Xu; R. Yang; P. Veyssiere
	2011
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	59 期号:1 页码:40917
摘要	The present work focuses on stacking fault tetrahedron (SFT) nucleation upon annihilation of edge dislocation dipoles in Al and Cu SFT nucleation is promoted by relatively low vacancy migration barriers along defected channels, typical of pipe diffusion-like processes, forming small vacancy clusters and elemental SFTs Within about 1 ns, depending on the material under investigation, the small initial vacancy clusters aggregate into larger clusters, including complete, incomplete and truncated SFTs Cluster aggregation occurs by diffusion of vacancy complexes whose mutual transformation and energetics are analyzed and compared It is concluded that the unique presence of deformation-induced SFTs, such as those found experimentally in Al, originates from a local mechanism of forced vacancy injection by dislocation reactions Subsequent stages of SFT growth by successive vacancy absorption and ledge expansion are deferred to companion papers (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved
部门归属	[wang, h.; xu, d. s.; yang, r.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [veyssiere, p.] off natl etud & rech aerosp, lem, cnrs, f-92322 chatillon, france.;wang, h (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Stacking Fault Tetrahedron Dislocation Dipole Dislocation Annihilation Molecular Dynamics Simulations Pipe Diffusion Edge-dislocation Dipoles Fcc Metals Plastic-deformation Tensile Properties Vacancy Clusters Single-crystals Temperature-dependence Anomalous Production Energy Calculations Saddle-points
URL	查看原文
WOS记录号	WOS:000284789200001
引用统计	被引频次：54[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/321006/30723
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Wang,D. S. Xu,R. Yang,et al. The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage[J]. Acta Materialia,2011,59(1):40917.
APA	H. Wang,D. S. Xu,R. Yang,&P. Veyssiere.(2011).The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage.Acta Materialia,59(1),40917.
MLA	H. Wang,et al."The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage".Acta Materialia 59.1(2011):40917.

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