Assessment and Evaluation of Mobilities for Diffusion in the bcc Cr-Mo-Fe System
Assessment and Evaluation of Mobilities for Diffusion in the bcc Cr-Mo-Fe System
复制标题
DOI：
10.1007/s11669-012-0107-z
复制
发表时间：
2009-05
影响因子：
1.4
通讯作者：
Greta Lindwall;K. Frisk
中科院分区：
文献类型：
--
作者：
Greta Lindwall;K. Frisk
给出了bcc Cr-Fe-Mo体系扩散迁移率函数的评价。利用文献中已有的实验扩散数据对迁移率参数进行了优化。通过扩散偶实验得到了Mo扩散的新数据，并在优化中加以考虑。计算的扩散系数与实测的扩散系数一致。进行了M6C粗化实验，用DICTRA软件进行了扩散计算，并建立了动力学描述，得到了实测的粗化速率。迁移率参数对粗化率的计算有很大的影响。
An assessment of the diffusion mobility functions for diffusion in the bcc Cr-Fe-Mo system is presented. The optimization of the mobility parameters is performed by utilizing experimental diffusion data available in literature. New diffusion data for the Mo diffusion is produced by a diffusion couple experiment and is accounted for in the optimization. Agreement between calculated and measured diffusion coefficients is found. An M6C coarsening experiment is performed and the measured coarsening rate can be reproduced by diffusion calculation using the DICTRA software and the developed kinetic description. The mobility parameters are shown to have a strong influence on the calculated coarsening rate.