Evolution of persistent slip bands and simulation of its stress field in a fatigued copper single crystal
文献类型：期刊论文
| 作者 | J. H. Yang ; Y. Li ; Z. Cai ; S. X. Li ; C. X. Ma ; E. H. Han ; W. Ke |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2003 |
| 卷号 | 345期号:1-2页码:164-171 |
| 关键词 | fatigued copper single crystal evolution of persistent slip bands simulation of stress fields dislocation-structures cyclic deformation amplitudes |
| ISSN号 | 0921-5093 |
| 中文摘要 | The transition from the so-called matrix veins to persistent slip bands (PSBs) in a fatigued copper single crystal was observed by electron channeling contrast (ECC) technique in a scanning electron microscope (SEM). In the four stages of PSBs formation, the different dislocation patterns can be obtained by the experiment, namely, the veins, persistent slip lines (PSLs), embryos and well developed PSBs dislocation structures. In the consecutive four stages the typical dislocation structures were simulated and the internal stresses were calculated by the three-dimensional discrete dislocation method, correspondingly, the external stresses were calculated by the finite element method (FEM). The simulation shows that in the dislocation dense regions (veins and walls) the stress distributions are relatively more concentrated than that in the dislocation poor regions (channels and within a PSL). At the tips of the PSLs and embryos, the internal stresses were not substantially changed; however, at the tips of the PSLs and embryos the external stresses were much higher than that at the other regions. This will drive the PSLs and embryos to grow. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36111]  |
| 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 | J. H. Yang,Y. Li,Z. Cai,et al. Evolution of persistent slip bands and simulation of its stress field in a fatigued copper single crystal[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2003,345(1-2):164-171. |
| APA | J. H. Yang.,Y. Li.,Z. Cai.,S. X. Li.,C. X. Ma.,...&W. Ke.(2003).Evolution of persistent slip bands and simulation of its stress field in a fatigued copper single crystal.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,345(1-2),164-171. |
| MLA | J. H. Yang,et al."Evolution of persistent slip bands and simulation of its stress field in a fatigued copper single crystal".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 345.1-2(2003):164-171. |
入库方式： OAI收割
来源：金属研究所
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