A Thermodynamic Assessment of the Cr-Zr System

An optimized set of thermodynamic functions of the Cr-Zr system has been obtained using phase diagram data from the literature. The excess free energies of the solution phases, liquid and three terminal solid solutions, were described by the Redlich-Kister formula. The Laves phases, αCr 2 Zr, βCr 2 Zr, and γCr 2 Zr, were described by the Wagner-Schottky model: αCr 2 Zr was treated with a two-sublattice model assuming antiestructure atoms on both sublattices; βCr 2 Zr and γCr 2 Zr were described with three sublattices after the formula (Cr, Zr) 6 (Zr, Cr) 4 (Cr) 2 , where the second atoms on the first two brackets are antistructure atoms