In this work, microstructure characteristics of α phase in Ti‐40Al‐8Nb‐0.5B alloys (at%) after deformation in the β and (β+α) phase regions are examined. The experimental results indicate that the microstructure characteristics of the α phase are considerably affected by the deformation temperature. During the deformation in the β phase area, the β phase is not only elongated perpendicular to the compression direction, but also presents a 〈100〉‐〈111〉 double fiber texture. After the β→α transformation, a part of the α phase exhibits an equiaxed morphology and the others show lath‐like shapes. Due to the microstructural heredity, the α phase of the sample deformed in the β phase field presents a 〈11‐20〉‐〈10‐10〉 double fiber texture. In contrast, refined α phase with randomly distributed orientation is produced after the deformation in the (β+α) phase field and this is caused by the dynamic recrystallization during the deformation process.

中文翻译：

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变形温度对Ti-40Al-8Nb-0.5B合金中α相组织的影响

在这项工作中，研究了Ti-40Al-8Nb-0.5B合金（at％）在β和（β+α）相区域变形后的α相组织特征。实验结果表明，变形温度对α相的微观结构特征有很大影响。在β相区域变形期间，β相不仅垂直于压缩方向伸长，而且呈现出<100>-<111>双纤维织构。β→α转变后，部分α相表现出等轴形态，而其他则表现出板条状。由于微观结构的遗传，在β相场中变形的样品的α相呈现出<11-20>-<10-10>的双纤维织构。相反，