CALCULATION OF TEMPERATURE DEPENDENCES OF THERMAL EFFECTS AT COOLING OF METAL ALLOYS
- 1 National Technical University of Ukraine "Kyiv Polytechnic Institute named after Igor Sikorsky" - Kyiv, Ukraine
- 2 Physical Technological Institute of Mrtals and Alloys, National Academy of Science of Ukraine
A method is proposed for determining the temperature dependences of thermal effects (the amount of heat released when the temperature changes) based on data on the temperature-concentration dependences of the free energies of the phases of metallic systems. These dependences are necessary for modeling of the processes of crystallization of alloys. They make it possible to obtain temperature dependences of the dimensions of the thermal effects without introducing the results of measurements of direct calorimetry. The peculiarity of calculating of the temperature dependences of thermal effects upon cooling of binary metal systems from the liquid state to room temperature (including crystallization) is shown using the example of the alloy of the system Pb-Sn.