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%.