The available experimental diffusion data of the bcc phase of the Ti-Sn binary alloys and Ti-Al-Sn ternary alloys have been critically evaluated to assess the atomic mobility parameters of bcc Ti-Al-Sn ternary alloys employing the diffusion-controlled transformation phenomenological treatment. The calculated interdiffusion coefficients in the bcc Ti-Sn binary and Ti-Al-Sn ternary alloys show a reasonable agreement with the experimentally extracted interdiffusion coefficients. The predicted composition profiles and diffusion paths reasonably represent those occurring in the Ti-Sn binary and Ti-Al-Sn ternary diffusion couples, thus validating the mobility database assessed in the present work.

已经对 Ti-Sn 二元合金和 Ti-Al-Sn 三元合金的 bcc 相的可用实验扩散数据进行了严格评估，以使用扩散控制相变现象学评估 bcc Ti-Al-Sn 三元合金的原子迁移率参数。治疗。bcc Ti-Sn 二元合金和 Ti-Al-Sn 三元合金中计算的互扩散系数与实验提取的互扩散系数具有合理的一致性。预测的成分分布和扩散路径合理地代表了 Ti-Sn 二元和 Ti-Al-Sn 三元扩散偶中发生的那些，从而验证了当前工作中评估的迁移率数据库。