Experimental Study on Ultrasonic Shot Peening Forming and Surface Properties of AALY12

Ultrasonic shot peening (USP) studied. Several parameters (arc heights, surface roughness topography and micro hardness) with different parameters were measured. The research proposes curvature of shot peened sheet increases with time decreasing, while increases with pin diameter increasing, and curvature reaches a saturation level after a specific electric current. An empirical model of the relationship between radius of curvature and pin diameter, electric current, time was The research shows that the increment of surface and hardness of material is more obvious with longer time of electric current, which can be up to 20% and 28 Keywords—USP forming, surface properties, radius of curvature, residual stress.