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A Comparative Study of Elastic Constants of NiTi and NiAl Alloys from First-Principle Calculations
文献类型：期刊论文
| 作者 | J. M. Lu ; Q. M. Hu ; R. Yang |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2009 |
| 卷号 | 25期号:2页码:215-218 |
| 关键词 | NiTi NiAl Elastic constant First-principle calculation shape memory alloys martensitic-transformation tini al |
| ISSN号 | 1005-0302 |
| 中文摘要 | To investigate the origin of the strong dependence of martensitic transformation temperature on composition, the elastic properties of high temperature 132 phases of both NiTi and NiAl were calculated by a first-principle method, the exact-muffin orbital method within coherent potential approximation. In the composition range of 50-56 at. pct Ni of NiTi and 60-70 at. pct Ni of NiAl in which martensitic transformation occurs, non-basal-plane shear modulus C(44) increases with increasing Ni content, while basal-plane shear modulus c' decreases. In the above composition ranges however the transformation temperature of NiAl increases with increasing Ni content while that of NiTi decreases from experimental observation. The softening of c' is experimentally observed only in NiAl, and the decrease of c' with increasing Ni content is responsible for the increase of transformation temperature. The result of the present work demonstrates that, besides c', C(44) also influences the martensitic transformation of NiTi and plays quite important a role. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32149]  |
| 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 | J. M. Lu,Q. M. Hu,R. Yang. A Comparative Study of Elastic Constants of NiTi and NiAl Alloys from First-Principle Calculations[J]. Journal of Materials Science & Technology,2009,25(2):215-218. |
| APA | J. M. Lu,Q. M. Hu,&R. Yang.(2009).A Comparative Study of Elastic Constants of NiTi and NiAl Alloys from First-Principle Calculations.Journal of Materials Science & Technology,25(2),215-218. |
| MLA | J. M. Lu,et al."A Comparative Study of Elastic Constants of NiTi and NiAl Alloys from First-Principle Calculations".Journal of Materials Science & Technology 25.2(2009):215-218. |
入库方式： OAI收割
来源：金属研究所
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