Molten pool behaviors and energy absorption in coaxial hybrid blue-IR lasers welding of a copper material

Microstructure and molten pool morphology of TiB2/ AlSi7Mg composites fabricated by infrared-blue hybrid laser powder bed fusion

“…Yang et al [ 34 ] studied the paraxial hybrid infrared-blue laser applied on the welding of 3 mm thick copper plates and found that the hybrid laser increased the absorption rate of infrared laser by 20 %. Wu et al [ 35 ] investigated the molten pool behavior in copper welding by coaxial hybrid infrared-blue lasers and found that the extra blue laser increases the energy efficiency and stability of infrared lasers. Hybrid lasers applied in laser welding have been widely studied, however, the potential of hybrid infrared-blue laser in aluminum matrix composites additive manufacturing is lacking.…”