Deformation-induced gamma <->alpha phase transformation in a hot-forged Ti-45Al-10Nb alloy
文献类型：期刊论文
| 作者 | J. G. Wang ; L. C. Zhang ; G. L. Chen ; H. Q. Ye ; T. G. Nieh |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 1997 |
| 卷号 | 240页码:287-292 |
| 关键词 | intermetallic compound titanium aluminide deformation-induced phase transformation HREM microstructure transmission electron-microscopy gamma-titanium aluminides interfacial boundaries intermetallic alloys |
| ISSN号 | 0921-5093 |
| 中文摘要 | Deformation-induced gamma --> alpha(2) and alpha(2) --> gamma phase transformations in a hot-forged Ti-45Al-10Nb alloy have been investigated by using high-resolution transmission electron microscopy (HREM). The gamma --> alpha(2) transformation is an interface-related process, which involves the emission of the interfacial superdislocations from the misoriented semi-coherent alpha(2)/gamma interface. These superdislocations further react with each other or with the moving dislocations in gamma phase and results in the formation of alpha(2) phase. On the other hand, the deformation-induced alpha(2) --> gamma phase transformation nucleates either at the alpha(2)/gamma interfaces or at the stacking faults on the basal plane of alpha(2) phase. The growth of gamma plate is accomplished by the moving of a/6 < <10(1)over bar 0> > Shockley partials on alternate basal plane (0001)(alpha 2). The interfaces as well as the crystallographic orientation relationship between the as-cast or deformation-induced alpha(2) and gamma phase have been analyzed. The mechanisms for the deformation-induced gamma --> alpha(2) and alpha(2)-gamma phase transformations were also discussed. (C) 1997 Elsevier Science S.A. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/38123]  |
| 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. Deformation-induced gamma <->alpha phase transformation in a hot-forged Ti-45Al-10Nb alloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,1997,240:287-292. |
| APA | J. G. Wang,L. C. Zhang,G. L. Chen,H. Q. Ye,&T. G. Nieh.(1997).Deformation-induced gamma <->alpha phase transformation in a hot-forged Ti-45Al-10Nb alloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,240,287-292. |
| MLA | J. G. Wang,et al."Deformation-induced gamma <->alpha phase transformation in a hot-forged Ti-45Al-10Nb alloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 240(1997):287-292. |
入库方式： OAI收割
来源：金属研究所
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