Effects of laser power modulation on keyhole behavior and energy absorptivity for laser welding of magnesium alloy AZ31

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Description

Applied sinusoidal laser power signal and the two different welding

Experimental set up for laser oscillating welding.

Effects of laser power modulation on keyhole behavior and energy absorptivity for laser welding of magnesium alloy AZ31

Schematic diagram of experimental system and laser power modulation modes

Effects of laser power modulation on keyhole behavior and energy absorptivity for laser welding of magnesium alloy AZ31

The penetration depth, weld width, fusion area, and cross-section

Schematic diagram of experimental system and laser power modulation modes

Characteristics of the molten pools observed by high-speed camera, (a)

Schematic diagram of the welding cross section showing the features

Applied sinusoidal laser power signal and the two different welding