Worn Surface Analysis and Wear Map Mechanism of AA4032 Composites

Abstract

The present research work exhibits the effect of reinforcement particles on the mechanical and wear properties of AA4032 hybrid and unhybrid metal matrix composites (MMCs). The unhybrid MMCs were prepared by incorporating titanium carbide (TiC) particles onto the AA4032, whereas the hybrid MMCs were prepared by the addition of hexagonal boron nitride (h-BN) particles to unhybrid AA4032-TiC composite. The tribological study conducted on the composites reveals that the wear rate was augmented at a higher applied load because of the formation of plastic deformation with some cracks. The generation of shear stress at an elevated applied load increases the coefficient of friction (COF). However, the addition of TiC and h-BN particles decreases the COF and wear rate because of the abrasion resistance and self-lubrication property of TiC and h-BN, respectively. The wear mechanism map study confirms that the hybrid MMCs have better wear resistance properties than the unhybrid MMCs with minimum delamination.

An Investigation on The Mechanical Properties of FSP Processed Silicon Nitride Reinforced Aluminum Composite

“…In this study, Al8011 and Al 6063 based composite material has been developed using Si3N4 as ceramic particles by friction stir processing that clearly justifies the novelty of the current work. Now a day the demand of low density high strength material is too high in the field of medical 33) , aerospace 34) , automobile 35) and defense 36) . Further the FSP technique has been better than traditional stir casting process 37) .…”