Diffusivities and atomic mobilities in bcc Ti-Zr-Nb alloys
Diffusivities and atomic mobilities in bcc Ti-Zr-Nb alloys
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bcc Ti-Zr-Nb 合金中的扩散率和原子迁移率
DOI：
10.1016/j.calphad.2018.12.003
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发表时间：
2019-03-01
影响因子：
2.4
通讯作者：
Zhang, Ligang
中科院分区：
文献类型：
--
作者：
Bai, Weimin;Tian, Yueyan;Zhang, Ligang
制备了扩散偶，并分别在1373 K和1473 K下退火72 h和48 h。采用Whittle和绿色方法计算了交叉组分处的互扩散系数，采用Hall方法计算了三元微量扩散系数。通过对体心立方结构Ti-Zr-Nb系中Ti和Nb的扩散系数的实验研究，建立了Ti和Nb原子迁移率数据库。计算的扩散系数和组分分布与实验数据吻合较好。
Diffusion couples were prepared and annealed at 1373 K for 72 h and 1473 K for 48 h, respectively. The interdiffusion coefficients at the intersection composition were obtained using the Whittle and Green method and the ternary trace diffusion coefficients using Hall method. The experimental diffusion coefficients of Ti and Nb in bcc Ti-Zr-Nb system were assessed to develop an atomic mobility database. The calculated diffusion coefficients and composition profiles show good agreement with the experimental data.