an-experimental-study-on-effects-of-laser-welding-speed-and-laser-power-on-weld-bead-shape-and-heat-affected-zone-in-keyhole-laser-welding==>>an-experimental-study-on-effects-of-laser-welding-speed-and-laser-power-on-weld-bead-shape-and-heat-affected-zone-in-keyhole-laser-weldinghttps://indexive.com/uploads/papers/pap_indexive15953473712147483647.pdf