Cyclic deformation behavior in pure Cu with growth-in twins

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	Cyclic deformation behavior in pure Cu with growth-in twins
	X. L. Guo; L. Lu; S. Li
	2005
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	405 期号:1-2 页码:239-245
摘要	A polycrystalline pure copper sample with high density of growth-in twins was synthesized by means of electro-deposition technique. Symmetrical push-pull cyclic deformation was performed at constant axial plastic strain amplitude in the range of 1.1 x 10(-4) < epsilon(pl) <= 3.9 x 10(-3). At low strain amplitudes (epsilon(pl) = 1.1 x 10(-4) 2.1 x 10(-4)), the initial cyclic hardening of Cu sample was found to be similar to that of single crystal Cu, and secondary softening was found. At higher strain amplitudes (epsilon(pl) = 1.0 x 10(-3), 1.8 x 10(-3)), cyclic stress reached the saturation rapidly, neither secondary softening nor secondary hardening was found. Investigations of dislocation configurations show that twin boundaries play a crucial role in the plastic deformation at higher strain amplitudes for Cu. A special wall structure, i.e. persistent slip bands (PSB)-like structure, was found inside the twin lamellae, which may induce the saturation cyclic behavior in Cu. (c) 2005 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china.;lu, l (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china;llu@imr.ac.cn
关键词	Copper Twin Cyclic Deformation Dislocation Configurations Copper Single-crystals Stress-strain Response Persistent Slip Bands Polycrystalline Copper Grain-boundary Substructure Evolution Dislocation-structures Fatigue Cracking Elastic Stresses Fcc Metals
URL	查看原文
WOS记录号	WOS:000232298800023
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/321006/34857
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. Li. Cyclic deformation behavior in pure Cu with growth-in twins[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2005,405(1-2):239-245.
APA	X. L. Guo,L. Lu,&S. Li.(2005).Cyclic deformation behavior in pure Cu with growth-in twins.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,405(1-2),239-245.
MLA	X. L. Guo,et al."Cyclic deformation behavior in pure Cu with growth-in twins".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 405.1-2(2005):239-245.