Dislocation evolution in twins of cyclically deformed copper

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	Dislocation evolution in twins of cyclically deformed copper
	X. L. Guo; L. Lu; S. X. Li
	2005
发表期刊	Philosophical Magazine Letters
ISSN	0950-0839
卷号	85 期号:12 页码:613-623
摘要	The evolution of dislocation structure in twins of different thicknesses has been investigated in polycrystalline copper fatigued at room temperature under constant plastic axial strain amplitude control. The dislocation structure and its evolution strongly depend on twin thickness. Three critical thicknesses must be distinguished, i.e. (i) characteristic size of fatigue dislocation structures, about 1 mm; (ii) critical height of stable dislocation wall structure, about 200 nm; (iii) critical spacing of dislocation dipole, about 20 nm. It is considered that the size effect is mainly caused by twin boundaries (TBs) which play different roles on slip behaviors in twins.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;lu, l (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;llu@imr.ac.cn
关键词	High Cycle Fatigue Substructure Evolution Polycrystalline Copper Low-amplitude Grain-size Deformation Microstructures Boundaries Cu Stresses
URL	查看原文
WOS记录号	WOS:000234228400001
引用统计	被引频次：13[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/321006/34858
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. L. Guo,L. Lu,S. X. Li. Dislocation evolution in twins of cyclically deformed copper[J]. Philosophical Magazine Letters,2005,85(12):613-623.
APA	X. L. Guo,L. Lu,&S. X. Li.(2005).Dislocation evolution in twins of cyclically deformed copper.Philosophical Magazine Letters,85(12),613-623.
MLA	X. L. Guo,et al."Dislocation evolution in twins of cyclically deformed copper".Philosophical Magazine Letters 85.12(2005):613-623.