This research forms part of the European COST 507 program on the two leading systems Al-Mg-Si-Cu and Al-Zn-Cu-Mg (with the additional/substitutional elements Zr, Cr, Rare Earths). It includes magnesium vapor pressure measurements in the binary Mg-Y system as well as in the two ternary systems Cu-Mg-Y and Cu-Mg-Si in Vienna Additionally, enthalpies of formation for liquid ternary alloys were determined by a calorimetric method in Stuttgart. All thermodynamic data were combined to provide a full thermodynamic description for liquid ternary Cu-Mg-Y and Cu-Mg-Si alloys based on an association model.
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