Thermodynamic assessment of the Mo-Zr system

The Mo-Zr system was critically assessed using the calculation of phase diagrams (CALPHAD) technique. The solution phases (liquid, bcc, and cph) were modeled with the Redlich-Kister expression for the excess Gibbs energy. The intermetallic Mo₂Zr Laves phase, which has a measurable homogeneity range, was treated by a two-sublattice model with Mo and Zr on both sublattices. A set of self-consistent thermodynamic parameters for the Mo-Zr system was obtained. With the optimized functions for the Gibbs energy of the individual phases, most of the experimental information can be well reproduced.