High speed impact surface treatment such as shot peening (SP)

laser shock peening (LSP) and surface mechanical attrition treatment (SMAT) can effectively improve the fatigue property

stress corrosion cracking performance and wear resistance of metallic materials. These surface modification techniques have been widely employed in aviation

aerospace

automobile

ship and nuclear industries. The basic principles and characteristics of SP

LSP and SMAT are introduced in this paper. The effects of SP

LSP and SMAT on surface integrity parameters of aluminum-lithium alloys

superalloys

titanium alloys and steels such as surface roughness

residual stresses in the surface layers

microhardness and microstructures in the surface layers are summarized. Finally

the research and development of high speed impact surface treatment in China are prospected.