Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7993261 | Journal of Alloys and Compounds | 2018 | 8 Pages |
Abstract
In this work, the effect of pre-deformation in the β phase field on the microstructural characteristics of α phase in a Ti-40Al-8Nb-0.5B alloy (at. %) was investigated. The results showed that the morphology and crystallography of α phase were strongly influenced by the deformation. It was observed that if there was no deformation, α laths which formed strict Burgers orientation relationship with β matrix are predominant (â¼81% in number fraction). In contrast, the Burgers α laths are significantly reduced after compression in the β phase field. Meanwhile, an abnormal double-fiber texture, <11-20> and <10-10>, is produced. After systematic analysis, we believe that the reduction of Burgers α is attributed to the heterogeneous nucleation of α phase at borides and the breakdown of the boride ribbons during deformation. Moreover, the formation of α texture is a synergetic consequence of β texture and boride texture.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Guang Yang, Wei Ren, Yanhui Liu, Wenjie Song, Fengbo Han, Yi Chen, Liang Cheng,