Thermodynamic calculations of Fe-Zr and Fe-Zr-C systems

Thermodynamic calculations of Fe-Zr and Fe-Zr-C systems have been performed using the Thermo-Calc software based on an extensive amount of experimenta l data, including the thermodynamic measurements and available phase diagra m information. The calculated thermodynamic properties and phase diagram in the Fe-Zr system account for the experimental data reasonably, while the c alculated solubility of ZrC in gamma Fe in the Fe-Zr-C system is a little s maller than the only experimental data by Narrita; to clear up this discrep ancy, further investigations on the Fe-Zr-C as well as the Zr-C systems are needed.