Reduction of springback of Ti6Al4V alloy in ultrasonic vibration assisted deformation: Numerical simulation and experimental study

Abstract. The ultrasonic vibration assisted bending tests of Ti6Al4V are conducted under different forming temperatures and vibration amplitudes. The effects of forming temperature and vibration amplitude are investigated. Moreover, based on ABAQUS software and explicit solver, the ultrasonic vibration-assisted bending deformation process is simulated to explore the influence of temperature and amplitude on the springback of the plate. The results show that the springback of the plate decreases with the increase of vibration amplitude. Increasing the temperature can also reduce the springback of the plate. At 1000°C, increasing the amplitude shows the best effect on reducing the springback of the plate. The finite element simulation results show that increasing the amplitude can reduce the stress in the central deformation area and makes the stress distribution uniform. The increase of temperature reduces the overall deformation stress of the plate, thereby reducing the springback of the plate.