查看文章

This work delivers a report on development of atomic mobility description with quantified uncertainties directly from concentration profiles via the Markov chain Monte Carlo algorithm as implemented in HitDIC software, which was demonstrated in fcc Cu–Ni–Sn ternary system. Different from the traditional mobility evaluation, the present new strategy started from the collection and review of all the concentration profiles available in the literature. Based on the collected concentration profiles, the atomic mobility descriptions and the corresponding quantified uncertainties in fcc Cu–Ni–Sn ternary and its sub-binary systems were directly evaluated. The reliability of the obtained mobility descriptions was firstly validated by the good agreement between the simulated and measured composition profiles, as well as by the calculated and reported inter-, tracer and intrinsic diffusivities. The fit of diffusion quantities to the …