Repulsive force between screw dislocation and coherent twin boundary in aluminum and copper
文献类型：期刊论文
| 作者 | Z. M. Chen ; Z. H. Jin ; H. J. Gao |
| 刊名 | Physical Review B
 |
| 出版日期 | 2007 |
| 卷号 | 75期号:21 |
| 关键词 | cross-slip nanocrystalline materials bimetallic interface metals transmission deformation simulations composites resistance strength |
| ISSN号 | 1098-0121 |
| 中文摘要 | Molecular dynamics (MD) simulations in combination with an atomistic path technique are used to examine energies required to impinge a screw dislocation on a coherent twin boundary (CTB) in Al and Cu. At large distances, we find that the dislocation-CTB interaction is characterized by repulsive forces which can be attributed to both the elasticity mismatch and distortion (shift and rotation) of deformation fields across the twin boundary. The repulsive forces are determined as a function of distance between the dislocation and the twin boundary based on our MD data and the classical dislocation theory. At short distances, the interaction is significantly influenced by the shear strength of the CTB: relatively low CTB shear strength can induce close-range attractive forces and cause slip to be absorbed into the twin plane. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33474]  |
| 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. M. Chen,Z. H. Jin,H. J. Gao. Repulsive force between screw dislocation and coherent twin boundary in aluminum and copper[J]. Physical Review B,2007,75(21). |
| APA | Z. M. Chen,Z. H. Jin,&H. J. Gao.(2007).Repulsive force between screw dislocation and coherent twin boundary in aluminum and copper.Physical Review B,75(21). |
| MLA | Z. M. Chen,et al."Repulsive force between screw dislocation and coherent twin boundary in aluminum and copper".Physical Review B 75.21(2007). |
入库方式： OAI收割
来源：金属研究所
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