Annihilation of persistent slip bands and its effect on the fatigue life of copper single crystals

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	Annihilation of persistent slip bands and its effect on the fatigue life of copper single crystals; Annihilation of persistent slip bands and its effect on the fatigue life of copper single crystals
	S. X. Li; M. Y. Li; R. Zhu; Y. S. Chao
	2004 ; 2004
发表期刊	Philosophical Magazine ; Philosophical Magazine
ISSN	1478-6443 ; 1478-6443
卷号	84 期号:31 页码:3323-3334
摘要	In single-slip-oriented copper single crystals, which were cyclically deformed under constant plastic shear strain amplitude control, a persistent slip band (PSB) was initiated on the persistent slip line (PSL) that first formed in the matrix vein dislocation structure. During intermediate temperature recovery (ITR) treatment in vacuum at 245 to 400degreesC, the variations in dislocation configurations and other defects of fatigued specimens were studied by using the scanning electron microscopy (SEM) electron channelling contrast (ECC) and the positron annihilation life (PAL) techniques. The results show that the ladders in the PSBs became curved and broken, or escaped locally until the PSBs disappeared completely during ITR treatment. The annihilation of the PSBs and other dislocation structures in the fatigued specimens prolonged the fatigue life to a certain extent.; In single-slip-oriented copper single crystals, which were cyclically deformed under constant plastic shear strain amplitude control, a persistent slip band (PSB) was initiated on the persistent slip line (PSL) that first formed in the matrix vein dislocation structure. During intermediate temperature recovery (ITR) treatment in vacuum at 245 to 400degreesC, the variations in dislocation configurations and other defects of fatigued specimens were studied by using the scanning electron microscopy (SEM) electron channelling contrast (ECC) and the positron annihilation life (PAL) techniques. The results show that the ladders in the PSBs became curved and broken, or escaped locally until the PSBs disappeared completely during ITR treatment. The annihilation of the PSBs and other dislocation structures in the fatigued specimens prolonged the fatigue life to a certain extent.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. northeastern univ, dept phys mat, shenyang 110004, peoples r china.;li, sx (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;shxli@imr.ac.cn ; chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. northeastern univ, dept phys mat, shenyang 110004, peoples r china.;li, sx (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;shxli@imr.ac.cn
关键词	Electron Channeling Contrast Electron Channeling Contrast Low-amplitude Fatigue Low-amplitude Fatigue Dislocation-structures Dislocation-structures Cyclic Deformation Cyclic Deformation Fcc Crystals Fcc Crystals Behavior Behavior Model Model Evolution Evolution Localization Localization Nucleation Nucleation
URL	查看原文 ; 查看原文
WOS记录号	WOS:000224898400002 ; WOS:000224898400002
引用统计	被引频次：7[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/321006/35422
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. X. Li,M. Y. Li,R. Zhu,et al. Annihilation of persistent slip bands and its effect on the fatigue life of copper single crystals, Annihilation of persistent slip bands and its effect on the fatigue life of copper single crystals[J]. Philosophical Magazine, Philosophical Magazine,2004, 2004,84, 84(31):3323-3334, 3323-3334.
APA	S. X. Li,M. Y. Li,R. Zhu,&Y. S. Chao.(2004).Annihilation of persistent slip bands and its effect on the fatigue life of copper single crystals.Philosophical Magazine,84(31),3323-3334.
MLA	S. X. Li,et al."Annihilation of persistent slip bands and its effect on the fatigue life of copper single crystals".Philosophical Magazine 84.31(2004):3323-3334.