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

Experimental set up for laser oscillating welding.

The photo of molten pool during welding processes with different

Posizione di saldature e provini. Weld's position and specimens.

Surface morphologies of weld seams obtained by laser welding with (a)

Single images of high-speed X-ray recording (grey images) of different

Porosity area percent with increasing pulse time and peak power density

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

a) Absorptivity of various materials for infrared laser (b) schematic