  A computational framework integrating thermodynamics, kinetics, and
mechanical stress calculations is developed to study supercritical CO2 induced
corrosion in model Fe-based MA956 and Ni-based H214 alloys. Empirical models
parametrized using experimental data show surface oxidation and sub-surface
carburization for a wide range of thermodynamic conditions (800-1200 {\deg}C,
1-250 bar). CALPHAD simulations based on empirical models demonstrate higher
carburization resistance in H214 compared to MA956 below 900 {\deg}C and
through-thickness carburization in both alloys at higher temperatures. Finite
element modeling reveals enhanced volumetric misfit induced stresses at oxide
and carbide interfaces, and its critical dependence on the carbide chemistry
and concentration.
