A. Engström, D. L. Höglund, Thermo-Calc Software AB, Stockholm, Sweden; H. Larsson, KTH (Royal Institute of Technology), Stockholm, Sweden; P. Mason, Thermo-Calc Software Inc, McMurray, PA
This paper presents a brief review and some new results on simulation of interdiffusion in Ni-base superalloy systems, by means of a thermodynamic and kinetic modelling approach as taken in a commercial finite-difference code, DICTRA[1]. This code solves the multi-component diffusion equations, combining assessed thermodynamic and kinetic data. Modelling and simulation results on interdiffusion in complex Ni-base superalloy diffusion couples including multiphase regions, obtained using a homogenization approach[2] recently implemented in DICTRA will be presented and discussed. References:
1. J.O. Andersson, T. Helander, L. Höglund, P.F. Shi, and B. Sundman, Calphad, 26(2002), pp. 273-312.
2. H. Larsson and A. Engström, Acta Materialia, 54(2006), pp. 2431-2439.
Summary: This paper presents a brief review and some new results on simulation of interdiffusion in Ni-base superalloy systems, by means of a thermodynamic and kinetic modelling approach as taken in a commercial finite-difference code, DICTRA. This code solves the multi-component diffusion equations, combining assessed thermodynamic and kinetic data. Modelling and simulation results on interdiffusion in complex Ni-base superalloy diffusion couples including multiphase regions, obtained using a homogenization approach recently implemented in DICTRA will be presented and discussed.
