PREDICTION THERMO-PHYSICAL CHARACTERISTICS HEAT-RESISTANT NICKEL ALLOYS DIRECTIONAL CRYSTALLIZATION

The thermodynamic processes of phase separation are modeled, which significantly affect the temperature characteristics heat-resistant nickel alloys directional solidification. Using an empirical approach, new ratios elements Kg¢ and Kg have been obtained for first time, take into account combined effect alloying on multicomponent compositions cast alloys. calculated values critical temperatures Ni-6Al-9Co-8W-4Re-4Ta-1.5Nb-1Mo-0.15C system (ZhS32-VI, ZhS32B-VI, ZhS32E-VI alloys) in good agreement with experimental ones. dependences ratio constructed, liquidus is investigated. content regression models that can be used to predict width range crystallization optimal homogenization a particular alloy presented.