| The effect of Ti/Al ratio on the site occupancies of alloying elements in gamma-TiAl | |
| Y. L. Hao; R. Yang; Y. Y. Cui; D. Li | |
| 2000 | |
| 发表期刊 | Intermetallics
 |
| ISSN | 0966-9795 |
| 卷号 | 8期号:5-6页码:633-636 |
| 摘要 | The site occupancies of V, Cr, Mn, Fe, Ni, Zr, Nb, Ta, Mo, Ga and Sn (1 similar to 5 at%) in TiAl alloys with different nominal Ti/Al ratios were measured by the atom location channelling enhanced microanalysis (ALCHEMI) method. The results showed that Zr, Nb and Ta invariably occupy Ti sublattice sites, whereas Fe, Ni, Ga and Sn occupy Al sublattice sites, the alloy composition having no significant influence on their site preference. By contrast, the site preference of V, Cr, and Mn changes significantly with alloy composition (the Ti/ Al ratio in particular), the probability of these elements occupying Ti sites decreasing in the above order. In general, with increasing atomic number, elements in the same period show increasing tendency to substitute for Al, so is the tendency to substitute for Ti for elements in the same group of the periodic table. A discussion is made in terms of the Bragg-Williams model by using published bond order data as input, allowing qualitative interpretation of the experimental findings. (C) 2000 Elsevier Science Ltd. All rights reserved. |
| 部门归属 | acad sinica, inst met res, shenyang 110015, peoples r china.;yang, r (reprint author), acad sinica, inst met res, 72 wenhua rd, shenyang 110015, peoples r china |
| 关键词 | Titanium Aluminides Based On Tial Crystal Chemistry Of Intermetallics Site Occupancy Beam Electron-diffraction Ternary Additions Base Alloys Cr Location Compound Alchemi Ti3al Mn Behavior |
| URL | 查看原文 |
| WOS记录号 | WOS:000087393800030 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/37041 |
| 专题 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. L. Hao,R. Yang,Y. Y. Cui,et al. The effect of Ti/Al ratio on the site occupancies of alloying elements in gamma-TiAl[J]. Intermetallics,2000,8(5-6):633-636. |
| APA | Y. L. Hao,R. Yang,Y. Y. Cui,&D. Li.(2000).The effect of Ti/Al ratio on the site occupancies of alloying elements in gamma-TiAl.Intermetallics,8(5-6),633-636. |
| MLA | Y. L. Hao,et al."The effect of Ti/Al ratio on the site occupancies of alloying elements in gamma-TiAl".Intermetallics 8.5-6(2000):633-636. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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