Surface influence of energy absorbed in CO2 laser-aluminium interaction
Keywords:CO2 laser, Aluminium, Absorbed energy, Surface
In this work bead-on-plates tests have been performed with CO2 laser beam, on Al-Mg-Si and Al-Zn-Mg aluminium alloys with different surface treatments. Al-Mg-Si alloy has presented more energy absorbed and best surface finish. The surface treatment with paints has produced an increase of absorbed energy, but with an important porosity in the fusion zone. The increase of surface rugosity has produced an increase of absorbed energy. The chemical treatments previous at bead-on-plates test have produced an important increasing in absorbed energy, especially in Al-Mg-Si alloy.
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