**6. Conclusion**

Laser surface treatment may be employed to provide advanced surface properties to a substrate material. The melt pool regime in laser irradiance is utilized to completely modify the surface properties. The interaction of laser with alloy/clad powder, laser and substrate material, powder particles, and substrate materials is important for clear understanding of the problem. Numerical-based techniques have provided a way to optimize, standardize the processes, and reduce wastage during actual processing. These techniques have a vast application horizon, i.e., from medical implants to turbine blades, all can be modified using these techniques.
