FE simulation of grain size and temperature rise during the forging of a commercial TC6 titanium alloy disc

The TC6 titanium alloy with relative highly strength, good ductility, toughness and resistance against heat and corrosion, has been widely used to manufacture important components, for example, the airfoil blade and disc in the aviation and aerospace industries. Such as all of titanium alloys, an interaction between the process parameters and the deformation behavior is main characteristics in the forging processes. The application of FE simulation makes the deep research of interaction be possible. The effect of deformation temperature, hammer velocity, height reduction, and shear factor on the equivalent stress, strain, grain size and temperature rise has been studied in forging process of the TC6 titanium alloy disc at deformation temperatures of 880-940°C, hammer velocities of 1.2-12000 mm/min, and shear factor of 0.1-0.4. The calculated results show that deformation temperature, hammer velocity, and height reduction have significant effect on the equivalent stress, grain size and temperature rise. And, it has slight effect on the equivalent strain. The calculated load-stroke curve is found to be in a good agreement with the experimental results.