Transmission electron microscopy study of stacking faults and their interaction with pyramidal dislocations in deformed Mg

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	Transmission electron microscopy study of stacking faults and their interaction with pyramidal dislocations in deformed Mg
	B. Li; P. F. Yan; M. L. Sui; E. Ma
	2010
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	58 期号:1 页码:173-179
摘要	We present transmission electron microscopy (TEM) observations of stacking faults (SFs) and their interactions with pyramidal dislocations, in plastically deformed polycrystalline pure magnesium. We have observed well-defined fringes its well as streaking in diffraction patterns, typical of SFs. The basal SFs are decorated by a large number of dark speckles, which are created by the interaction with pyramidal dislocations that have both < c > and < a > components as revealed by our contrast analysis. The SFs do not appear to result from the splitting of unit dislocations, as the SFs are relatively wide and no dislocation nodes were observed. By tilting the specimen systematically inside TEM, the SFs and the associated dislocations in Mg are found to exhibit a rich variety of features in terms of their morphology and diffraction contrast. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[li, b.; ma, e.] johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa. [li, b.; ma, e.] johns hopkins univ, ctr adv metall & ceram syst, baltimore, md 21218 usa. [yan, p. f.] chinese acad sci, inst met res, shenyang, peoples r china. [sui, m. l.] beijing univ technol, inst microstruct & property adv mat, beijing 100124, peoples r china.;li, b (reprint author), johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa;bli@jhu.edu
关键词	Dislocations Stacking Fault Magnesium Tem Plastic-deformation Vacancy Clusters Hcp Metals Alloys Irradiation Simulation Stability Zinc
URL	查看原文
WOS记录号	WOS:000272405600018
引用统计	被引频次：111[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/321006/31196
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Li,P. F. Yan,M. L. Sui,et al. Transmission electron microscopy study of stacking faults and their interaction with pyramidal dislocations in deformed Mg[J]. Acta Materialia,2010,58(1):173-179.
APA	B. Li,P. F. Yan,M. L. Sui,&E. Ma.(2010).Transmission electron microscopy study of stacking faults and their interaction with pyramidal dislocations in deformed Mg.Acta Materialia,58(1),173-179.
MLA	B. Li,et al."Transmission electron microscopy study of stacking faults and their interaction with pyramidal dislocations in deformed Mg".Acta Materialia 58.1(2010):173-179.