Laser micro-welding of AZ92A magnesium wires using a fiber-laser: A preliminary study
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© 2020 The Authors.This work discusses an analysis of laser beam characteristics, applied to conduction welding of AZ92A magnesium wires for medical meshes. Our experiments consisted of the exposure of multiple laser shots on kapton film varying focal position and laser power. Our results indicate that a high laser power level promotes a linear increase of beam radius at focal plane, quality factor and divergence angle. A parametric analysis was carried out varying input energy levels. Porosity was observed as a defect owing to high magnesium reactivity with oxygen. A direct relation of input energy and weld spot size was observed.