Thermodynamic assessment and experimental investigation of Fe-Al-C system

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|
作者：
School of Material Science and Engineering, Shanghai University, Shanghai 200072, China [1 ]
不详 [2 ]
不详 [3 ]
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来源：
J Mater Sci Technol | 2008年 / 5卷 / 771-774期
关键词：
Calculated values - Critical temperatures - Experimental investigations - Ternary phase diagrams - ThermoCalc software - Thermodynamic assessment - Thermodynamic calculations - Thermodynamic parameter;
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摘要：
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 FeAlC 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 AC1 and AC3 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.
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