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A model for multiphase simulations in 1D previously reported in [H. Larsson, A. Engström, Acta Mater. 54 (2006) 2431] has been further developed and incorporated in the DICTRA software. The model is based on the assumption of local equilibrium and locally averaged kinetic properties, which computationally transforms the problem into a single-phase diffusion process. The applicability of the model...
The diffusion of Fe, Cr and Ni in one dimension in and between one- and two-phase α/γ regions was simulated using independently assessed thermodynamic and kinetic data. Simulation results compare favourably with experimental results obtained previously by one of the present authors (A. Engström). For example, the formation of a γ layer between an α and a γ+α region is correctly predicted. Neither...
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