Dislocation slip or deformation twinning: confining pressure makes a difference
文献类型：期刊论文
| 作者 | D. S. Xu ; J. P. Chang ; J. Li ; R. Yang ; D. Li ; S. Yip |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2004 |
| 卷号 | 387页码:840-844 |
| 关键词 | twin nucleation molecular dynamics b.c.c. metal Mo pressure multilayer stacking-faults bcc metals transition-metals molybdenum lattices crystals fcc |
| ISSN号 | 0921-5093 |
| 中文摘要 | While b.c.c. metals deform plastically by dislocation motion or deformation twinning, the atomistic mechanisms governing the choice of deformation modes are not well established. Molecular dynamics simulations using the Finnis-Sinclair potential were carried out to explore the pressure dependence of the deformation response of b.c.c. molybdenum. The crystal was sheared in (112)[(1) over bar(1) over bar1] under various confining pressures. The homogeneous nucleation stress of deformation twinning was found to increase with increasing confining pressure. Under sufficient pressure (011)[(1) over bar(1) over bar1] dislocations were nucleated instead of twins. Details of the dislocation and twin nucleations were analyzed with the help of the multi-layer generalized stacking fault energies. A two-fault (n = 2) metastable twin state was found, in contrast to previous results using pair potentials. (C) 2004 Published by Elsevier B.V. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35659]  |
| 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 | D. S. Xu,J. P. Chang,J. Li,et al. Dislocation slip or deformation twinning: confining pressure makes a difference[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2004,387:840-844. |
| APA | D. S. Xu,J. P. Chang,J. Li,R. Yang,D. Li,&S. Yip.(2004).Dislocation slip or deformation twinning: confining pressure makes a difference.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,387,840-844. |
| MLA | D. S. Xu,et al."Dislocation slip or deformation twinning: confining pressure makes a difference".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 387(2004):840-844. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。