Effect of the deformation temperature, hammer velocity, height reduction and shear factor on the equivalent stress, strain and temperature rise has been studied in forging process of a TC6 titanium alloy disc with deformation temperatures of 1153–1213 K, hammer velocities of 1·2–12 000 mm min−1 and shear factors of 0·1–0·4. The calculated results show that the deformation temperature, hammer velocity and height reduction have a significant effect on the equivalent stress and temperature rise, but have a slight effect on the equivalent strain. The predicted load–displacement curves are found to be in a good agreement with the experimental results.
