Numerical simulation and experimental study of surface microstructure of aluminum alloy prepared by laser

In order to study the mechanism of laser on aluminum alloy surface microstructure, the effect of laser scanning speed on aluminum alloy surface microstructure was revealed. In this paper, combining experimental and numerical methods, has thoroughly investigated the laser ablation process on aluminum alloy surfaces. The calculated results of the model agree well with the experimental results in some respects. By manipulating scanning speed and spacing, we successfully prepared distinct surface microstructures on the aluminum alloy. The findings indicate that scanning speed significantly impacts thermal diffusion and ablation depth, while control over scanning spacing positively shapes the surface microstructure's morphology. At wider scanning intervals, the thermal diffusion and internal thermal stress can induce a 'warping effect' and material removal. Optimizing these parameters is crucial for the highest quality micromachining outcomes.