Study on the alpha(2)/gamma interfacial structures in a two-phase (alpha(2)+gamma) alloy deformed at elevated temperature
文献类型：期刊论文
| 作者 | J. G. Wang ; L. C. Zhang ; G. L. Chen ; H. Q. Ye |
| 刊名 | Journal of Materials Science
 |
| 出版日期 | 2000 |
| 卷号 | 35期号:2页码:399-409 |
| 关键词 | transmission electron-microscopy gamma-titanium aluminides ti-45al-10nb alloy intermetallic alloys mechanical twins boundaries dislocations deformation ti3al alpha-2 |
| ISSN号 | 0022-2461 |
| 中文摘要 | The details of structure modification on alpha(2/gamma) interface induced by deformation in a hot-deformed Ti-45Al-10Nb alloy were investigated by conventional and high-resolution transmission electron microscopy. A new type of dislocation ledge containing 1/3[111] partials was identified. The Burgers vectors of these dislocation ledges were determined to be 1/2[110] or 1/2[101]. The formation mechanism of this new type of dislocation ledge is discussed. Also, two types of hot deformation induced alpha(2/gamma) interfaces, coherent interfaces with high density of ledges and misoriented semi-coherent alpha(2/gamma) interfacial boundaries were observed. For the misoriented semi-coherent alpha(2 gamma) interfaces, the density of dislocation ledges in these interfaces increases with the misoriented angle between the (111)(gamma) and (0001)(alpha 2) planes, and 1/3[111] partial dislocations were involved in all the dislocation ledges. The formation mechanism of these deformation-induced alpha(2/gamma) interfaces were discussed related to the role of alpha(2/gamma) interfaces adjusting the deformation as a dislocation sink absorbing the slipping dislocations in the gamma phase. Moreover, misoriented semi-coherent alpha(2/gamma) interface related deformation twinning and structure transformation induced by deformation were analyzed and discussed related to the role of alpha(2/gamma) interfaces as a dislocation source during deformation. (C) 2000 Kluwer Academic Publishers. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37184]  |
| 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. G. Wang,L. C. Zhang,G. L. Chen,et al. Study on the alpha(2)/gamma interfacial structures in a two-phase (alpha(2)+gamma) alloy deformed at elevated temperature[J]. Journal of Materials Science,2000,35(2):399-409. |
| APA | J. G. Wang,L. C. Zhang,G. L. Chen,&H. Q. Ye.(2000).Study on the alpha(2)/gamma interfacial structures in a two-phase (alpha(2)+gamma) alloy deformed at elevated temperature.Journal of Materials Science,35(2),399-409. |
| MLA | J. G. Wang,et al."Study on the alpha(2)/gamma interfacial structures in a two-phase (alpha(2)+gamma) alloy deformed at elevated temperature".Journal of Materials Science 35.2(2000):399-409. |
入库方式： OAI收割
来源：金属研究所
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