Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals
文献类型：期刊论文
| 作者 | X. W. Li ; Z. G. Wang ; Y. W. Zhang ; S. X. Li ; Y. Umakoshi |
| 刊名 | Physica Status Solidi a-Applied Research
 |
| 出版日期 | 2002 |
| 卷号 | 191期号:1页码:97-105 |
| 关键词 | polycrystalline copper deformation-behavior orientation fatigue |
| ISSN号 | 0031-8965 |
| 中文摘要 | The dislocation structures of cyclically deformed coplanar [(2) over bar 55] and [(2) over bar 33] double-slip-oriented copper single crystals were studied by transmission electron microscopy and related to the macroscopic mechanical behavior. Experimental results indicated that the crystallographic orientation has nearly no effect on the cyclic stress-strain (CSS) behavior and dislocation structures of both [(2) over bar 55] and [(2) over bar 33] coplanar double-slip-oriented Cu single crystals. The cyclic dislocation structure of coplanar double-slip crystals consists primarily of dislocation cells, the scale of which decreases with increasing applied strain amplitude. Under certain applied strain amplitudes, the observed dislocation cells exhibit different features, including dislocation wall-like and persistent slip band (PSB) ladder-like features, which are favourable for accommodating much more plastic strains during cyclic deformation. The occurrence of a quasi-plateau, where the stresses show a slow increase with plastic strain amplitude, in the CSS curve of coplanar double-slip-oriented Cu single crystals was believed to result from the joint effects of the scale change of the cell structure and the formation of PSB ladder-like cell structure. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36320]  |
| 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. W. Li,Z. G. Wang,Y. W. Zhang,et al. Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals[J]. Physica Status Solidi a-Applied Research,2002,191(1):97-105. |
| APA | X. W. Li,Z. G. Wang,Y. W. Zhang,S. X. Li,&Y. Umakoshi.(2002).Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals.Physica Status Solidi a-Applied Research,191(1),97-105. |
| MLA | X. W. Li,et al."Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals".Physica Status Solidi a-Applied Research 191.1(2002):97-105. |
入库方式： OAI收割
来源：金属研究所
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