Warm Laser Shock Peening: New developments and process optimization

Warm Laser Shock Peening is obtained by laser peening a pre-warmed workpiece surface: combining the thermal effect of the pre-heated surface and the mechanical phenomenon of the recoil shock pressure, the dynamic aging of the surface microstructure is obtained. Precipitates surrounded by dense dislocation together with residual stress considerable increase the mechanical properties of the workpiece.