Abstract
Interdiffusion in Ti-Al-Mo β solid solution was investigated at 1523 K (1250 °C) by analyzing diffusion couples. From the concentration profiles analytically represented by error function expansion (ERFEX), the ternary interdiffusion coefficients and impurity diffusivity were extracted by the Whittle–Green and generalized Hall methods. A comparison of the diffusion in five Ti-Al-X (Co, Cr, Fe, Mo, and V) ternaries reveals Ti-Al-Mo is comparably like Ti-Al-(Cr, V) while Ti-Al-(Co, Fe) are predominantly of interstitial nature.
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The authors would like to thank the National Natural Science Foundation of China (No. 51301135) and the Program of Introducing Talents of Discipline to Universities (B08040) for financial support. Yi Chen wishes to gratefully acknowledge the financial support by the Chinese Scholarship Council (CSC).
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Manuscript submitted November 28, 2013.
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Chen, Y., Tang, B., Xu, G. et al. Diffusion Research in BCC Ti-Al-Mo Ternary Alloys. Metall Mater Trans A 45, 1647–1652 (2014). https://doi.org/10.1007/s11661-014-2245-x
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DOI: https://doi.org/10.1007/s11661-014-2245-x