On the basis of the critically reviewed experimental diffusivities available in the literature, the atomic mobilities of Cu, Mn and Ni in face-centered cubic Cu–Mn–Ni alloys were assessed as a function of temperature and composition by means of diffusion-controlled transformation software. Comprehensive comparisons between the calculated results and the experimental data showed that a good agreement was obtained for various diffusivities in binary and ternary systems, including impurity diffusion coefficients, tracer diffusion coefficients and interdiffusion coefficients. The atomic mobilities obtained could also be used to describe various diffusion phenomena for a series of binary and ternary diffusion couples, such as concentration profiles, the Kirkendall shift, the interdiffusion flux and diffusion paths.

Atomic Mobility, Diffusivity and Diffusion Growth Simulation for FCC Cu–Mn–Ni Alloys. W.Zhang, Y.Du, L.Zhang, H.Xu, S.Liu, L.Chen: Calphad, 2011, 35[3], 367-75