Laser Surface Remelting in Single-Crystal Nickel-based Superalloy using a Continuous Wave Fiber Laser

Abstract

Highlights Laser surface remelting was performed on a single-crystal nickel-based superalloy under various energy densities by using a continuous wave fiber laser. A working range of energy densities for keyhole and conduction mode of penetration were derived. The effect of positive focal position on laser-induced surface defects and property was investigated.