Effects on Microstructure and Properties of Brass Treated by Laser Shock Processing

摘要

Laser shock processing(LSP)has been proposed as a new surface treatment for improving hardness,wear resistance and fatigue.In this paper,the effect of LSP on brass is investigated with experiment.Micro-hardness,roughness,microstructure,wear resistance and friction coefficient evolution are investigated for different parameters of LSP.The result shows that the roughness increases after LSP;no ablation is observed;the microstructure has no remarkable change;hardness and the wear resistance increase as the pulse density increases.