Thermodynamic description of the Cu-Al-Ni system at the Cu-Ni side

A thermodynamic description of the ternary Cu-Al-Ni system at the Cu-Ni side is presented. The thermodynamic parameters of the sub-systems Cu-Al, Cu-Ni and Al-Ni are taken from earlier SGTE-based assessments (modifying the Al-Ni description slightly) and those of the ternary Cu-Al-Ni system and system are optimized in this study by using the experimental thermodynamic and phase equilibrium data. The present ternary description is valid at temperatures above 500 ∘C and for aluminum contents up to 18 wt%.