The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage
文献类型：期刊论文
| 作者 | H. Wang ; D. S. Xu ; R. Yang ; P. Veyssiere |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2011 |
| 卷号 | 59期号:1页码:40917 |
| 关键词 | Stacking fault tetrahedron Dislocation dipole Dislocation annihilation Molecular dynamics simulations Pipe diffusion edge-dislocation dipoles fcc metals plastic-deformation tensile properties vacancy clusters single-crystals temperature-dependence anomalous production energy calculations saddle-points |
| ISSN号 | 1359-6454 |
| 中文摘要 | The present work focuses on stacking fault tetrahedron (SFT) nucleation upon annihilation of edge dislocation dipoles in Al and Cu SFT nucleation is promoted by relatively low vacancy migration barriers along defected channels, typical of pipe diffusion-like processes, forming small vacancy clusters and elemental SFTs Within about 1 ns, depending on the material under investigation, the small initial vacancy clusters aggregate into larger clusters, including complete, incomplete and truncated SFTs Cluster aggregation occurs by diffusion of vacancy complexes whose mutual transformation and energetics are analyzed and compared It is concluded that the unique presence of deformation-induced SFTs, such as those found experimentally in Al, originates from a local mechanism of forced vacancy injection by dislocation reactions Subsequent stages of SFT growth by successive vacancy absorption and ledge expansion are deferred to companion papers (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/321006/30723]  |
| 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 | H. Wang,D. S. Xu,R. Yang,et al. The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage[J]. Acta Materialia,2011,59(1):40917. |
| APA | H. Wang,D. S. Xu,R. Yang,&P. Veyssiere.(2011).The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage.Acta Materialia,59(1),40917. |
| MLA | H. Wang,et al."The formation of stacking fault tetrahedra in Al and Cu I Dipole annihilation and the nucleation stage".Acta Materialia 59.1(2011):40917. |
入库方式： OAI收割
来源：金属研究所
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