A thermodynamic evaluation of the Fe–Cr–C system

The availability of recent data on Gibbs energies of Fe7C3 and Fe23C6 based on ab initio calculations required the complete reassessment of the thermodynamic parameters in the Fe–Cr–C system. In order to perform the optimization process a detailed critical evaluation of the experimental literature data on the Fe–Cr–C system was made. The Calphad technique using a computerized optimization procedure (PARROT) was applied in the work. Thus, a new self-consistent thermodynamic description of the Fe–Cr–C system based on a detailed literature survey was obtained in the present work. The results are presented in a number of phase diagrams.