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Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals
文献类型：期刊论文
| 作者 | Z. H. Jin ; P. Gumbsch ; K. Albe ; E. Ma ; K. Lu ; H. Gleiter ; H. Hahn |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2008 |
| 卷号 | 56期号:5页码:1126-1135 |
| 关键词 | dislocation slip twinning twin grain boundary molecular dynamics molecular-dynamics simulation grain-boundaries nanocrystalline materials cross-slip rate sensitivity deformation copper strength aluminum fcc |
| ISSN号 | 1359-6454 |
| 中文摘要 | In a first report [Jin ZH.. Gumbsch P, Ma E, Albe K, Lu K, Hahn H, et al. Scripta Mater 2006;54:1163], interactions between screw dislocation and coherent twin boundary (CTB) were studied via molecular dynamics simulations for three face-centered cubic (fcc) metals, Cu, Ni and Al. To complement those preliminary results, purely stress-driven interactions between 60 degrees non-screw lattice dislocation and CTB are considered in this paper. Depending on the material and the applied strain, slip has been observed to interact with the boundary in different ways. If a 60 degrees dislocation is forced by an external stress into a CTB, it dissociates into different partial dislocations gliding into the twin as well as along the twin boundary. A sessile dislocation lock may be generated at the CTB if the transited slip is incomplete. The details of the interaction are controlled by the material-dependent energy barriers for the formation of Shockley partial dislocations from the site where the lattice dislocation impinges upon the boundary. (c) 2007 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/321006/32850]  |
| 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 | Z. H. Jin,P. Gumbsch,K. Albe,et al. Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals[J]. Acta Materialia,2008,56(5):1126-1135. |
| APA | Z. H. Jin.,P. Gumbsch.,K. Albe.,E. Ma.,K. Lu.,...&H. Hahn.(2008).Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals.Acta Materialia,56(5),1126-1135. |
| MLA | Z. H. Jin,et al."Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals".Acta Materialia 56.5(2008):1126-1135. |
入库方式： OAI收割
来源：金属研究所
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