Mesoscopic analysis of pre-loaded simple structures irradiated by high power laser

In this paper, the samplesurface, fracture surface and metallagraphic structure are examined by SEM of the loaded beams and plates irradiated by CW CO2 laser, and the influence of irradiation of high power laser in the material properties of LY12 is analysed then the reason and character of material failure by the thermal and mechanical force are investigated.