Thermodynamic reassessment of the Cu–Mg–Ni system with brief comments on the thermodynamic modeling of the sub-systems

The Cu–Mg–Ni system was reassessed using the CALPHAD (CALculation of PHAse Diagram) approach, in order to provide a reliable thermodynamic description. A set of self-consistent thermodynamic parameters for the Cu–Mg–Ni system was obtained. The liquidus projection and the reaction scheme were generated by using the present thermodynamic parameters. Significant improvements have been made, compared with the previous assessments. Thermodynamic modeling for the three sub-systems was briefly reviewed. Further work is of interest to refine the thermodynamic description of the binary systems, in order to avoid the appearance of the artificial phase equilibria in liquid above 2500 ∘C.