Characterization the wear behavior of Al-Ti alloy having different Ti ratios prepared by powder metallurgy

Abstract

Abstract In this study, the Al-Ti alloy was fabricated by powder metallurgy method using three different Ti ratios (10wt%; 15wt%; and 20wt%Ti); and the wear behavior of these three alloys was investigated. The mixtures of powders were compacted at 146 MPa and sintered for 5 hours at 550- ˚C under vacuumed atmosphere. The samples were characterized using X-Ray Diffraction test (XRD), Scanning Electron Microscope test (SEM), microhardness and density tests. The tests of wear were achieved by employing a pin on disk machine under constant normal load 15N for four different sliding times 5, 10, 15, and 20 minutes. The results illustrate that the density and microhardness of Al-Ti alloy were increased as the Ti content increased. Also, it was observed that Al-Ti alloy with 20wt%Ti had the highest wear resistance and lowest weight loss.