| Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals | |
| Li, P.; Li, S. X.; Wang, Z. G.; Zhang, Z. F. | |
| Corresponding Author | Li, P.(pli@imr.ac.cn) |
| 2010-05-01 | |
| Source Publication | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| Volume | 58Issue:9Pages:3281-3294 |
| Abstract | 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. |
| Keyword | Orientation effect Cyclic deformation Copper single crystals Dislocation patterns |
| Funding Organization | National Outstanding Young Scientist Foundation ; National Natural Science Foundation of China ; National Basic Research Program of China |
| DOI | 10.1016/j.actamat.2010.02.002 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Outstanding Young Scientist Foundation[50625103] ; National Natural Science Foundation of China[50890173] ; National Basic Research Program of China[2010CB631006] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000277747400010 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/99666 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, P. |
| Affiliation | Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Li, P.,Li, S. X.,Wang, Z. G.,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 | Li, P.,Li, S. X.,Wang, Z. G.,&Zhang, Z. F..(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 | Li, P.,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. |
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