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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Effect of pre-deformation in the beta phase field on the microstructure and texture of the alpha phase in a boron-added beta-solidifying TiAl alloy
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Effect of pre-deformation in the beta phase field on the microstructure and texture of the alpha phase in a boron-added beta-solidifying TiAl alloy

机译：β相场上预变形对硼 - 固化β固化性合金中α相的微观结构和质地的影响

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摘要

In this work, the effect of pre-deformation in the beta phase field on the microstructural characteristics of alpha phase in a Ti-40Al-8Nb-0.5B alloy (at. %) was investigated. The results showed that the morphology and crystallography of alpha phase were strongly influenced by the deformation. It was observed that if there was no deformation, alpha laths which formed strict Burgers orientation relationship with beta matrix are predominant (similar to 81% in number fraction). In contrast, the Burgers alpha laths are significantly reduced after compression in the beta 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 alpha is attributed to the heterogeneous nucleation of alpha phase at borides and the breakdown of the boride ribbons during deformation. Moreover, the formation of alpha texture is a synergetic consequence of beta texture and boride texture. (C) 2018 Elsevier B.V. All rights reserved.
机译：在这项工作中，研究了在Ti-40Al-8NB-0.5b合金（AT.％）中β相域对β相域的微观结构特性对β相位的影响。结果表明，α相的形态和晶体学强烈受变形的影响。观察到，如果没有变形，形成严格的汉堡与β基质的α板条是主要的（类似于数量分数的81％）。相比之下，在β相场中压缩后，汉堡α板条显着降低。同时，异常双纤维纹理，＆ 11-20＆和<10-10＆。在系统分析后，我们认为汉将α的减少归因于硼化物在硼化物中的α相的异质成核和硼化物丝带的击穿。此外，α质地的形成是β纹理和硼化物纹理的协同结果。 （c）2018年elestvier b.v.保留所有权利。

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