The migration of jet materials along the collision interface with laser impact welding

The jetting process plays a vital role for the achievement of a high-quality metallurgical bond in laser impact welding (LIW) due to its cleaning effect for the collision surfaces. However, its cleaning behavior and evolution with time remained unknown. This study innovatively sputtered an Au film onto the target surface as a tracking element to visualize the migration of jet materials. The trajectory of the jetting process was also simulated …