Turchanin M. Thermodynamics of liquid copper alloys with transition metals

Mixing enthalpies of binary liquid alloys of copper with transition metals and influence of temperature on them have been investigated by means of high temperature calorimetry. Thermodynamic assessment of the systems has been carried out and the phase diagrams were calculated. The excess heat capacities of liquid alloys were ascertained. Regularities of temperature-composition dependence of thermodynamic mixing functions have been cleared up for liquid alloys with different type of component interaction. The criterion for estimation of amorphisation composition range of melts based on analysis of chemical short range order has been proposed. Behavior of thermodynamic properties in the investigated series of systems has been ascertained and explained on the base of calculation of the energetic contributions to the mixing enthalpy of disordered copper alloys with transition metals in the frameworks of tight-binding-bond model. The models of temperature-composition dependence of thermodynamic properties of phases have been used for modeling of metastable transformations involving the supercooled liquid alloys.