Solidification cracking in laser beam welding arises from the persistence of liquid films along grain boundaries during late-stage solidification and is exacerbated by high heat input and slow cooling. Effective suppression strategies include laser beam oscillation, dual-laser setups, optimized process parameters, and the use of filler materials, all of which promote equiaxed grain formation and reduce cracking susceptibility. While these methods improve weld quality, ongoing research is necessary to adapt for varying materials and welding conditions.
15 June 2025
