Determination of wear properties for b4c particle reinforced aluminum matrix high wear resistance composite materials

The studies conducted; aluminum matrix B4C reinforced composite material were produced by stir casting method with two different volume ratio; produced composite materials were characterized and dry sliding wear properties were investigated by pin-on-disc tests. In the present work, AlSi9Cu3Mg was used as a matrix material because of noticeable castability properties. The stir casting method was chosen because of preventing the regional aggregation of reinforcement B4C particles in composite material. By mixing B4C particles and K2TiF6 flux, matrix reinforcement interface was modified as a result titanium rich reaction layer was occurred however both particle addition yield and bond strength were increased. The wear behavior of produced composite material was examined by pin-on-disc tests. These tests were performed to composite materials were prepared asa disk and AISI 4140 steel pins were used as a counter surfaces. Considering the wear test results of the friction coefficient increases with increasing volume fraction was determined. Analyzing the microstructure of the surface of the adhesive wear, abrasive wear and layered tracks were found.