Characterization of dislocation structures in (1)over-bar11 copper single crystals using electron channelling contrast technique in SEM
文献类型：期刊论文
| 作者 | X. W. Li ; Y. Zhou ; W. W. Guo ; G. P. Zhang |
| 刊名 | Crystal Research and Technology
 |
| 出版日期 | 2009 |
| 卷号 | 44期号:3页码:315-321 |
| 关键词 | Cu single crystal dislocation structure multiple slip plastic strain amplitude cyclic deformation SEM-ECC plastic strain amplitudes persistent slip bands conjugate double-slip cyclic deformation behavior fatigue stress saturation arrangements dependence |
| ISSN号 | 0232-1300 |
| 中文摘要 | The dislocation structures induced by low-plastic-strain-amplitude cyclic deformation of [(1) over bar 11] multiple-slip-oriented Cu single crystals were investigated using electron channelling contrast (ECC) technique in scanning electron microscopy (SEM). At a low plastic strain amplitude gamma(pl) of 8.8 x 10(-5), the saturated dislocation structure is mainly composed of labyrinth-like vein structure (or irregular labyrinths), and the cyclic hardening behavior at such a low gamma(pl) is interpreted as being the result of dislocation multiplication by a Frank-Read mechanism. As gamma(pl) increases to 4.0 x 10(-4), the unsaturated dislocation structure exhibits two kinds of distinctive configurations, i.e., dislocation walls and misoriented cells. Interestingly, these misoriented dislocation cells are strictly aligned along the primary slip plane (111), constituting a unique persistent slip band (PSB) structure. Here, these cells are thus called PSB cells. In addition, there is a locally distinctive region comprising some cells having a recrystallization-like feature in the whole structure of PSB cells. The formation of the structure of PSB cells is discussed. (c) 2009 WILEY-VCH Verlag GmbH & Co. KGaA. Weinheim |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32043]  |
| 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,Y. Zhou,W. W. Guo,et al. Characterization of dislocation structures in (1)over-bar11 copper single crystals using electron channelling contrast technique in SEM[J]. Crystal Research and Technology,2009,44(3):315-321. |
| APA | X. W. Li,Y. Zhou,W. W. Guo,&G. P. Zhang.(2009).Characterization of dislocation structures in (1)over-bar11 copper single crystals using electron channelling contrast technique in SEM.Crystal Research and Technology,44(3),315-321. |
| MLA | X. W. Li,et al."Characterization of dislocation structures in (1)over-bar11 copper single crystals using electron channelling contrast technique in SEM".Crystal Research and Technology 44.3(2009):315-321. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。