Abstract
Based on the thermodynamic parameters and experimental diffusion data in the literature, the atomic mobilities of bcc Ti-Sn alloys are assessed by the CALPHAD method using DICTRA software package, and boundary mobility parameters of hcp Ti-Sn alloys were also given in the work. Compared with the calculated and measured diffusion coefficients of bcc Ti-Sn, most of the experimental data are reproduced well. The composition-distance profiles of Ti/Ti-4.9 at.% Sn diffusion couple at 1223 K for 14.4 ks were also predicted using the assessed mobility parameters. It is hopeful to provide useful guidance for the design of Ti-based alloys.
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Acknowledgment
The authors would like to thank for the financial support from the Major State Basic Development Program of China (973 Program) (No. 2014CB644000), National Natural Science Foundation of China (No. 51371200, No.51464007), Hunan Provincial Natural Science Foundation of China (No. 14JJ3124) and Natural Science Foundation of Hunan University of Technology (2013HZX20).
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Wang, J.L., Liu, L.B., Tuo, B.Y. et al. Computational Study of Mobilities and Diffusion in Ti-Sn Alloy. J. Phase Equilib. Diffus. 36, 248–253 (2015). https://doi.org/10.1007/s11669-015-0377-3
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DOI: https://doi.org/10.1007/s11669-015-0377-3