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Phase diagram information of the Fe-C,Fe-Al and Al-C systems are reviewed and the Fe-Al-C system is assessed.A FeAlC database is created by combining a set of thermodynamic parameters established by Kumar and SSOL database in Thermo-Calc software package.Ternary phase diagrams are calculated with FeAlC and the newly developed Thermo-Calc databases SSOL2 and SSOL4.The FeAIC database is the best one to describe the Fe-Al-C system.A1 and A3 values on the vertical section containing 1.5 wt pct Al are calculated with the FeAlC database in this work.To validate the thermodynamic calculation,critical temperatures A_(C_1) and A_(C_3) are determined by using dilatometer analysis.There exist some errors between the calculated values and the experimental results.So further optimization of the Fe-Al-C system regarding bcc and fcc phases is necessary.The experimental data in this work could be of some value in further optimization.
Phase diagram information of the Fe-C, Fe-Al and Al-C systems are reviewed and the Fe-Al-C system is assessed. A FeAlC database is created by combining a set of thermodynamic parameters established by Kumar and SSOL database in Thermo -Calc software package.Ternary phase diagrams are calculated with FeAlC and the newly developed Thermo-Calc databases SSOL2 and SSOL4. The FeAIC database is the best one to describe the Fe-Al-C system. A1 and A3 values on the vertical section containing 1.5 wt pct Al are calculated with the FeAlC database in this work. To validate the thermodynamic calculation, critical temperatures A_ (C_1) and A_ (C_3) are determined by using dilatometer analysis. There exist some errors between the calculated values and the experimental results .So further optimization of the Fe-Al-C system regarding bcc and fcc phases is necessary. The experimental data in this work could be of some value in further optimization.