THERMODYNAMIC CALCULATION OF THE AL-MG PHASE-DIAGRAM

Thermodynamic descriptions for the various phases in the binary Al-Mg are presented. These descriptions were obtained by optimization using the thermodynamic and phase equilibrium data available in the literature. The calculated phase diagram of Al-Mg using these thermodynamic descriptions is in excellent agreement with experimental phase equilibrium data reported in the literature. In comparison to earlier evaluations of Al-Mg, we use considerably less model parameters. Yet, the model-calculated thermodynamic values and phase diagram are in good, if not better, agreement with experimental data than those obtained using previous descriptions.