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Strengthening of gamma-TiAl-Nb by short-range ordering of point defects
文献类型：期刊论文
| 作者 | Y. J. Li ; Q. M. Hu ; D. S. Xu ; R. Yang |
| 刊名 | Intermetallics
 |
| 出版日期 | 2011 |
| 卷号 | 19期号:6页码:793-796 |
| 关键词 | Titanium aluminide Point defect complex First-principles calculation Solid-solution strengthening titanium aluminides solid-solutions alloys al |
| ISSN号 | 0966-9795 |
| 中文摘要 | The origin of the superior high temperature strength of Ti-rich gamma-TiAl with addition of Nb is a highly controversial issue. In this paper, we calculated the interaction energies between point defects in these alloys using a first-principles plane-wave pseudopotential method. It is found that, the nearest neighbouring Nb atoms on Al-sublattice (Nb(Al)) repel whereas the next nearest neighbouring Nb(Al) atoms attract each other, indicating that Nb(Al) atoms may form short-range ordered structure. Based on this finding, we propose that the short-range order may be responsible for the high strength of the Ti-rich TiAl-Nb alloys. (C) 2010 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30492]  |
| 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 | Y. J. Li,Q. M. Hu,D. S. Xu,et al. Strengthening of gamma-TiAl-Nb by short-range ordering of point defects[J]. Intermetallics,2011,19(6):793-796. |
| APA | Y. J. Li,Q. M. Hu,D. S. Xu,&R. Yang.(2011).Strengthening of gamma-TiAl-Nb by short-range ordering of point defects.Intermetallics,19(6),793-796. |
| MLA | Y. J. Li,et al."Strengthening of gamma-TiAl-Nb by short-range ordering of point defects".Intermetallics 19.6(2011):793-796. |
入库方式： OAI收割
来源：金属研究所
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