The material processing procedure, which utilizes a high-power density
laser, was made to focus on a metal coating to melt the thin layer of the substrate is
called Laser Surface Alloying (LSA). It is one of the efficient processes to fabricate
material for proper microstructure and non-equilibrium solidification. These fabricated
materials have shown good corrosion and wear resistance than the base material of
several alloys. Compared to traditional methods like welding, thermal spraying, etc.,
LSA had the advantage of the constrained heat-affected zone (HAZ), high density, and
good mechanical properties. Surface modification using laser alloying of various
materials, processing techniques, properties of the alloying surfaces, and combination
of multiple alloys and elements to the laser surface modification are described in detail,
along with the favorable conditions for adhesive wear.
Keywords: Alloying surface, Aluminum, Ceramics, Cracks, Dilution, Hardness,
Heat affected zone, Inconel alloys, Interface, Laser surface alloying, Mechanical
properties, Metallic glass, Microhardness, Powders, Porosity, Process techniques,
Titanium, Solidification, Stainless steel, Wear.
