Microhardness Analysis of Laser Cladding CBN coating on the Surface of Titanium Alloy

摘要

The Cubic boron nitride (CBN) coating are prepared by laser cladding on the TC11 surface. The hardness of cladding coating were researched by means of mechanical property testing. The result indicated that the coating micro-hardness increases with increasing laser power when the other parameters are fixed. With the laser power increasing, Injection of energy increases, The reinforced phase increased, microhardness along with it enhancement. With the increase of the scanning speed within chose, the microstructure of the cladding layer changes tiny and uniform, the microhardness were increased. The hardness was increased greatly which after Laser hardening. The maximum values of them are as about five times as that of the substrate.