Ternary Diffusion and Thermodynamic Interaction in the β Solid Solutions of Ti–Al–Zr Alloys at 1473 K

Interdiffusion in Ti-rich β solid solutions Ti–Al–Zr alloys was investigated at 1473 K. In the alloys, main interdiffusion coefficients (i.e., and , respectively) cross coefficients, have positive values, as well a slight concentration dependence. The values of are larger than those . Ti–Al–X (= V, Cr, Fe, Co, Zr) Repulsive interactions occur between Al X atoms because ratio to ones sign. On other hand, Ti (solvent) (or Al) attractive present converted is negative values.