Fe-P体系热力学再优化

doi:10.3866/PKU.WHXB201111172

Abstract

Abstract: The Fe-P binary system was reoptimized by means of the CALPHAD approach. The Gibbs energy descriptions of every phase in the Fe-P binary system were optimized based on the latest experimental thermodynamic and phase diagram data. The solution phase (liquid, α-Fe, and γ-Fe) was described by the substitutional solution approximation and the other phases (Fe₃P, Fe₂P, FeP, FeP₂, and FeP₄) were treated as the stoichiometric compounds. The optimization was carried out using the Thermo-Calc^® software package. The agreement of the optimized phase diagram and thermodynamic data with experimental results is good, and a self-consistent and reliable thermodynamic dataset is obtained to allow further optimization of Fe-based, P-containing multicomponent alloy systems.

Key words: Fe-P system, CALPHAD approach, Phase diagram, Thermodynamic optimization

CAO Zhan-Min, WANG Kun-Peng, QIAO Zhi-Yu, DU Guang-Wei. Thermodynamic Reoptimization of the Fe-P System[J]. Acta Phys. -Chim. Sin. 2012, 28(01), 37-43. doi: 10.3866/PKU.WHXB201111172

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Thermodynamic Reoptimization of the Fe-P System

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