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

Thermodynamic Reoptimization of the Fe-P System

1.
State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science & Technology Beijing, Beijing 100083, P. R. China

Received Date: 8 October 2011
Available Online: 17 November 2011
Fund Project: 国家自然科学基金(50934011)资助项目 (50934011)

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 od, and a self-consistent and reliable thermodynamic dataset is obtained to allow further optimization of Fe-based, P-containing multicomponent alloy systems.
- Fe-P system,
- CALPHAD approach,
- Phase diagram,
- Thermodynamic optimization
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