Study on shot peening of TA15 titanium alloy

To investigate the strengthening effect of shot peening on TA15 titanium alloy,examination of fatigue life and surface roughness with handheld roughness instrument and hydraulic servo fatigue test machine was carried out after shot peening process.The results showed that the fatigue life is improved by shot peening,and the material gets best fatigue property under the condition of pill S280 and intensity 0.15mA~0.2mmA.The relationship between the surface roughness and fatigue life indicates that better roughness corresponded to higher fatigue life,which means the surface roughness is one of the effecting factors for TA15 fatigue life.The results provide directory to the technical design of shot peening process of TA15 titanium alloy.