ABSTRACT
A mathematical model of temperature fields and laminar hydrodynamic flows during electron-beam melting of high-strength titanium alloy was developed, which made it possible to determine the geometry of the liquidus-solidus interphase (mushy) zone. The zone determines the crystallization front of the metal whose position and geometry significantly affects the quality of the ingot formation. According to the calculated regimes at E.O. Paton Electric Welding Institute, high-quality ingots of TA15 titanium alloy were smelted a 150 mm diameter.
