Variety of microstructure and mechanical properties along the laser impact welded interface

Laser impact welding (LIW) is an attractive technique for thin film dissimilar materials solid-state welding. To understand the mechanism of laser impact welding, the wave character of wavy interfaces, the morphology of intermetallics, the diffusion phenomenon and the hardness along the welding direction were investigated with Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometer (EDS), and nanoindentation, respectively. There is a …