Abstract

In the laser cladding process, a molten pool of the pasted or blown powder with a complex three-dimensional (3D) shape is formed on the substrate, by the laser beam interaction with powder material. This interaction time^1,2 plays a crucial role for the desired successful cladding. In our present analysis, we find that in a narrow range of power density and beam interaction time, the regime of laser cladding could further be classified (Fig. 1) for evolution of coarse, fine, and ultrafine dendrite microstructure.

© 1996 Optical Society of America