Thermodynamic assessment of the Mo–Zr binary phase diagram

The Mo–Zr binary system has been optimized using the available experimental data on the phase diagram and two estimated enthalpy values, one for the formation of the Laves phase and one for the mixing of the liquid phase. During the optimizing procedure all the experimental data were optimized simultaneously. The excess Gibbs energy of the stable phases, liquid, body centred cubic (bcc), hexagonal closed packed (hcp) and Laves_c15, has been obtained. The solution phases: liquid, bcc and hcp, have been treated as substitutional solutions and the intermetallic phase Laves_c15 has been modelled using the sublattice model. A set of model parameters is given.