AN EXPERIMENTAL STUDY ON SELECTED MATERIAL BY LASER PROCESS PARAMETERS TO IMPROVE SURFACE MICRO-HARDNESS FOR BIO-MEDICAL APPLICATIONS

Abstract

Laser heating is regarded as one of the best-performing manufacturing technologies available today due to its versatility and ability to produce parts with complex geometries. In reality, this method can yield durable parts with hard, thin martensite and tensile residual stresses. Laser surface hardening is a novel technology for enhancing the surface of metals, particularly steels, that has gained popularity in recent decades. The results reveal that the surface micro-hardness of treated samples varies from 711 to 833 Vickers Pyramid Number by optimizing procedure settings such as laser beam power of 300 W, laser scan speed of 1.0 mm/s, and standoff distance of 225 mm. The dry sliding wear test is performed on all laser-treated samples, and the results are compared to the untreated sample. The treated samples showed a considerable improvement in wear resistance when compared to the untreated samples.