Thermodynamic description of the CuAlZn and CuSnZn systems in the copper-rich corner

Thermodynamic descriptions of the ternary CuAlZn and CuSnZn systems in the copper-rich corner are presented. The thermodynamic parameters of the binary sub-systems, CuAl, CuSn, CuZn, AlSn, AlZn and SnZn, are based on earlier SGTE-based assessments and those of the ternary CuAlZn and CuSnZn systems are optimized in this study by using the experimental thermodynamic and phase equilibrium data. The present ternary descriptions are valid for aluminum contents up to xAl=0.33, tin contents up to xSn=0.25 and zinc contents up to xZn=0.7.