Influence of Hot Shot Peening on Surface Reforming and Local Alloying

抄録

The surface properties and microstructure of metallic materials can be enhanced by various methods. In particular, a shot peening treatment is commonly used to increase the surface residual stress and fatigue life. When a heated work material is shot-peened, the components of the shot grid diffuse to the processed material surface and partially alloy with its elements. As a result, the residual stress and lifetime of the alloyed phase increase. The proposed hot shot peening method can effectively suppress the formation of surface cracks without increasing manufacturing costs.