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The surface profile of laser peened stainless steel was researched in this paper,a special lens was used to convert circle laser spot to square spot,the difference of surface profile obtained by laser peening with circle laser spot was compared with that with square laser spot.Laser peened zone showed steep depression at the edge with square spot,but the surface in the shocked zone was very smooth.With suitable overlapped rate,square spot can produce smoother surface profile than circle spot,and laser peening with square spot is more effective than circle spot.
The surface profile of laser peened stainless steel was researched in this paper, a special lens was used to convert circle laser spot to square spot, the difference of surface profile obtained by laser peening with circle laser spot was compared with that with square laser spot. Laser peened zone showed steep depression at the edge with square spot, but the surface in the shocked zone was very smooth. With suitable overlapped rate, square spot can produce smoother surface profile than circle spot, and laser peening with square spot is more effective than circle spot.