Cyclic deformation behavior in pure Cu with growth-in twins
文献类型：期刊论文
| 作者 | X. L. Guo ; L. Lu ; S. Li |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2005 |
| 卷号 | 405期号:1-2页码:239-245 |
| 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 |
| ISSN号 | 0921-5093 |
| 中文摘要 | 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. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34857]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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