Simulation and observation of dislocation pattern evolution in the early stages of fatigue in a copper single crystal

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	Simulation and observation of dislocation pattern evolution in the early stages of fatigue in a copper single crystal
	J. H. Yang; Y. Li; S. X. Li; C. X. Ma; G. Y. Li
	2001
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	299 期号:1-2 页码:51-58
摘要	During cyclic deformation, the early stages of dislocation pattern formation and evolution of a single-slip-oriented copper single crystal were simulated by using the method of discrete dislocation dynamics and observed by using the electron channeling contrast (ECC) technique in a scanning electron microscopy (SEM). Computer simulation results agree rather well with the experimental observations. Hence, some new mechanisms were proposed. Such as in the early stages of cyclic deformation, the formation and evolution of dislocation veins could originate from the matrix walls which are composed by the same sign of dislocations, and a dipole matrix wall could be formed by combining two matrix walls with the opposite signs of dislocations. (C) 2001 Elsevier Science B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, state key lab fatique & fracture mat, shenyang 110015, peoples r china. northeastern univ, dept mat phys, shenyang 110006, peoples r china.;yang, jh (reprint author), chinese acad sci, inst met res, state key lab fatique & fracture mat, shenyang 110015, peoples r china
关键词	Simulation And Observation Dislocation Pattern The Early Stages Of Fatigue Copper Single Crystal Cyclic Deformation Localization Strain
URL	查看原文
WOS记录号	WOS:000166559700006
引用统计	被引频次：18[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/321006/36860
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. H. Yang,Y. Li,S. X. Li,et al. Simulation and observation of dislocation pattern evolution in the early stages of fatigue in a copper single crystal[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2001,299(1-2):51-58.
APA	J. H. Yang,Y. Li,S. X. Li,C. X. Ma,&G. Y. Li.(2001).Simulation and observation of dislocation pattern evolution in the early stages of fatigue in a copper single crystal.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,299(1-2),51-58.
MLA	J. H. Yang,et al."Simulation and observation of dislocation pattern evolution in the early stages of fatigue in a copper single crystal".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 299.1-2(2001):51-58.