Thermodynamic description of the Cu-Al-Si system in the copper-rich corner

A thermodynamic description is presented for the ternary Cu-Al-Si system in its copper-rich corner. The thermodynamic parameters of the sub-systems, Cu-Al, Cu-Si and Al-Si, are taken from earlier SGTE-based assessments and those of the ternary system are optimized in this study by using the experimental mixing enthalpy and phase equilibrium data. The present ternary description is valid for aluminum contents up to 18 wt% and silicon contents up to 8 wt%.