Environmental effects on deformation mechanism and dislocation microstructure in fatigued copper single crystal

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	Environmental effects on deformation mechanism and dislocation microstructure in fatigued copper single crystal
	J. H. Yang; X. P. Zhang; Y. W. Mai; W. P. Jia; W. Ke
	2005
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	396 期号:1-2 页码:403-408
摘要	The deformation and dislocation microstructure of a [0 13] double-slip-oriented copper single crystal under a symmetric tension-compression cyclic load were characterized at room temperature in open-air and a neutral 0.5 M NaCl aqueous solution, respectively. The surface morphology of deformed specimens and the dislocation structures at saturation stage of cyclic deformation were observed using scanning electron microscopy (SEM) by the electron channeling contrast (ECC) technique and transmission electron microscopy (TEM). The results show that the saturation dislocation structures during the corrosion fatigue in the 0.5 M NaCl aqueous solution mainly consist of labyrinth, wall and vein dislocation microstructures, as well as deformation twins, which differ from the wall and vein dislocation structures in open-air environment. More importantly, here we report TEM observations that provide evidence of deformation twinning in the [0 13] double-slip-oriented copper single crystal during corrosion fatigue at room temperature and a very slow strain rate, which was generally only observed at sub-ambient temperature and/or high strain rate conditions. (c) 2005 Elsevier B.V. All fights reserved.
部门归属	univ sydney, sch aerosp mech & mech engn, ctr adv mat technol, sydney, nsw 2006, australia. chinese acad sci, inst met res, shenyang 110016, peoples r china. s china univ technol, sch mech engn, guangzhou 510640, peoples r china.;zhang, xp (reprint author), univ sydney, sch aerosp mech & mech engn, ctr adv mat technol, j07, sydney, nsw 2006, australia;xzhang@aeromech.usyd.edu.au
关键词	Corrosion Fatigue Dislocation Microstructure Deformation Twins Double-slip-oriented Copper Single Crystal Oxide-forming Environment Persistent Slip Bands m Perchloric-acid Cyclic Deformation Corrosion-fatigue Crack Nucleation Simulation Amplitude Aluminum Behavior
URL	查看原文
WOS记录号	WOS:000228740500052
引用统计	被引频次：3[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/321006/35166
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. H. Yang,X. P. Zhang,Y. W. Mai,et al. Environmental effects on deformation mechanism and dislocation microstructure in fatigued copper single crystal[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2005,396(1-2):403-408.
APA	J. H. Yang,X. P. Zhang,Y. W. Mai,W. P. Jia,&W. Ke.(2005).Environmental effects on deformation mechanism and dislocation microstructure in fatigued copper single crystal.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,396(1-2),403-408.
MLA	J. H. Yang,et al."Environmental effects on deformation mechanism and dislocation microstructure in fatigued copper single crystal".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 396.1-2(2005):403-408.