Laser Machining of Inconel: A Review

Inconel is a nickel-based alloy known for its ability to endure extremely high temperatures while maintaining most of its mechanical strength. Inconel super-alloys are challenging to machine due to their robustness at high cutting temperatures and sensitivity to heat generated by conventional methods like drilling, milling, and grinding. These traditional techniques struggle with poor surface quality, high tool wear, and unexpected tool failure, largely due to the alloy's low thermal conductivity. To address these challenges, non-traditional methods are employed to effectively machine super-alloys. Laser machining for Inconel, a non-traditional technique is employed which takes into account factors like depth of cut, laser power, distance from the laser to the workpiece, cutting speed, and feed rate. Key outputs, such as surface roughness, surface finish, cutting forces, machining temperature, etc. are closely monitored. This review paper aims to provide an overview of various experiments conducted on Inconel using Laser beam machining and Laser-assisted machining.