Shandong Science ›› 2021, Vol. 34 ›› Issue (1): 35-42.doi: 10.3976/j.issn.1002-4026.2021.01.005

• New Materials • Previous Articles     Next Articles

Optimization of phase diagram based on Ti-Nb-Zr ternary system alloy

XU Li-li1, XU Yong1*, XU Rong-fu1, WANG Zhi-gang1, TIAN Bin1 , YU Mei-jie2   

  1. 1. School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China;2.School of Materials Science and Engineering, Shandong University, Jinan 250061, China

  • Received:2020-07-08 Online:2021-02-15 Published:2021-01-30

Abstract: The optimization and calculation of the phase diagram of a Ti-Nb-Zr ternary system were presented using Pandat software. The Gibbs energy of the pure component was described using the expression provided in the scientific group thermodata Europe database. The substitutional solution and two-sublattice models were used to describe the Gibbs energy of the liquid and solid solution phases, respectively. To improve the description of the Ti-Nb-Zr ternary system, the thermodynamic parameters of the Ti-Nb and Ti-Zr systems were obtained using the PanOptimizer module of Pandat software by considering experimental data on phase equilibrium and published thermodynamic properties. The calculations of the phase equilibrium and thermodynamic properties using the proposed description agreed well with the experimental data. The results have important directive significance to the development of Ti-Nb-Zr ternary system biomedical materials.

Key words: Ti-Nb-Zr, phase diagram, thermodynamic assessment, calculation of phase diagram, Pandat software

CLC Number: 

  • TG146.2+3