Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (10): 2148-2156.doi: 10.3866/PKU.WHXB201307291


Thermodynamic Optimization of the Al-Fe-P Ternary System

CAO Zhan-Min1, XIE Wei1, WANG Kun-Peng1, NIU Chun-Ju2, DU Guang-Wei1, QIAO Zhi-Yu1   

  1. 1 State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science & Technology Beijing, Beijing 100083, P. R. China;
    2 School of Materials Science and Engineering, University of Science & Technology Beijing, Beijing 100083, P. R. China
  • Received:2013-04-01 Revised:2013-07-15 Published:2013-09-26
  • Contact: CAO Zhan-Min
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (50934011, 51274034) and Fundamental Research Funds for the Central Universities, China (FRF-SD-12-010A).


A critical thermodynamic optimization of the Al-Fe-P ternary system was performed using the CALPHAD method. Among the sub-binary systems in the Al-Fe-P system, the Al-P systemwas reassessed according to its related experimental information. The thermodynamic descriptions of the Al-Fe and Fe-Pbinary systems were taken from previous studies with minor modifications. The parameters of the thermodynamic model of the Al-Fe-P ternary systemwere optimized based on available experimental phase diagramdata and thermodynamic properties. One set of consistent parameters of the Gibbs energies of all phases, which can satisfactorily reproduce most of the experimental phase diagramdata, was obtained. By employing the driving force criterion with the present thermodynamic description, the experimentally reported composition dependence of the glass-forming ability of the Al-Fe-P systemcould be explained thermodynamically.

Key words: Al-Fe-P, Phase diagram, Thermodynamics, Optimization, Glass forming ability