B2 precipitates and distribution of W in a Ti-47Al-2W-0.5Si alloy
文献类型：期刊论文
| 作者 | R. Yu ; L. L. He ; Z. Y. Cheng ; J. Zhu ; H. Q. Ye |
| 刊名 | Intermetallics
 |
| 出版日期 | 2002 |
| 卷号 | 10期号:7页码:661-665 |
| 关键词 | titanium aluminides electron microscopy based on TiAl precipitates transmission phase interfaces site occupany analytical electron-microscope gamma-titanium aluminides orientation relationship creep deformation tial alloy atomic-scale segregation microstructure interfaces resistance |
| ISSN号 | 0966-9795 |
| 中文摘要 | The precipitation behavior of B2 particles and the distribution of W in a Ti-47Al-2W-0.5Si alloy were investigated using high-spatial resolution analytical electron microscopy (AEM) and high-resolution electron microscopy (HREM). The ledges at the alpha(2)/gamma interfaces were found to be enriched in W and therefore the preferable nucleation sites for the B2 precipitates. In the B2 phase, as high as one third of Al is substituted by W in comparison with the composition of the 7 phase. The segregation of W to the alpha(2)/gamma and B2/gamma interfaces was also detected. These results provide explanations for the previous observations that additions of tungsten are effective in promoting the creep resistance of TiAl alloys. (C) 2002 Published by Elsevier Science Ltd. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36510]  |
| 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 | R. Yu,L. L. He,Z. Y. Cheng,et al. B2 precipitates and distribution of W in a Ti-47Al-2W-0.5Si alloy[J]. Intermetallics,2002,10(7):661-665. |
| APA | R. Yu,L. L. He,Z. Y. Cheng,J. Zhu,&H. Q. Ye.(2002).B2 precipitates and distribution of W in a Ti-47Al-2W-0.5Si alloy.Intermetallics,10(7),661-665. |
| MLA | R. Yu,et al."B2 precipitates and distribution of W in a Ti-47Al-2W-0.5Si alloy".Intermetallics 10.7(2002):661-665. |
入库方式： OAI收割
来源：金属研究所
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