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Formation mechanisms of cyclic saturation dislocation patterns in 001 , 011 and (1)over-bar 1 1 copper single crystals
文献类型：期刊论文
| 作者 | P. Li ; S. X. Li ; Z. G. Wang ; Z. F. Zhang |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2010 |
| 卷号 | 58期号:9页码:3281-3294 |
| 关键词 | Orientation effect Cyclic deformation Copper single crystals Dislocation patterns electron channeling contrast persistent slip bands stress-strain response low-amplitude fatigue deformation-behavior grain-boundaries orientation surface localization arrangements |
| ISSN号 | 1359-6454 |
| 中文摘要 | This work reveals the formation mechanisms of saturation dislocation patterns in three typical multiple-slip oriented [0 0 1], [0 1 1] and [(1) over bar 1 1] copper single crystals. Compared with the single-slip oriented copper single crystals, the three multiple-slip oriented ones show very different dislocation patterns. It was found that the dislocation patterns in cyclically saturated copper single crystals are the Labyrinth structure for [0 0 1], wall structure for [0 1 1] and cell structure for [(1) over bar 1 1] , respectively. Based on a two-phase structure consisting of persistent slip bands and veins for single-slip orientation, the formation mechanisms of the dislocation patterns in multiple-slip oriented crystals are proposed as follows: the formation of the complex dislocation patterns depends on the activating slip system. The easy operation of the critical secondary slip system will contribute to the formation of the Labyrinth structure. The activation of the coplanar secondary slip system will be beneficial to formation of the cell structure. If no secondary slip system is activated, the wall structure is more prone to appear. Finally, the intrinsic relationship between various dislocation patterns and face centered cubic crystal structure was established. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31228]  |
| 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 | P. Li,S. X. Li,Z. G. Wang,et al. Formation mechanisms of cyclic saturation dislocation patterns in 001 , 011 and (1)over-bar 1 1 copper single crystals[J]. Acta Materialia,2010,58(9):3281-3294. |
| APA | P. Li,S. X. Li,Z. G. Wang,&Z. F. Zhang.(2010).Formation mechanisms of cyclic saturation dislocation patterns in 001 , 011 and (1)over-bar 1 1 copper single crystals.Acta Materialia,58(9),3281-3294. |
| MLA | P. Li,et al."Formation mechanisms of cyclic saturation dislocation patterns in 001 , 011 and (1)over-bar 1 1 copper single crystals".Acta Materialia 58.9(2010):3281-3294. |
入库方式： OAI收割
来源：金属研究所
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