Effect of laser peening on the microhardness and roughness of Al-7277 alloy

The purpose of the study conducted was an analysis of the influence of pulse density per area unit of LSP on (7277AL Alloy) regarding the surface characterization, roughness achieved and microhardness. The samples, which were used in this investigation, are 7277Al Alloy. Specify the laser parameter used in this study effect on sample surface properties were studied. Such as laser energy, and laser pulses number the results reveal that the microhardness enhancement by 80%, while the surface roughness increased by 69% when laser energy of 360mj and the number of laser pulses of 100 pulse were applied. X-ray fluorescence analyses and optical microscope were carried out for all samples.