Research Information System
9 th International Students Science Congress, Manisa, Turkey, 22 - 23 May 2025, pp.175, (Summary Text)
Aluminum and alloys have become prominent in various industrial fields due to their superior corrosion resistance, easy machinability, and low density. However, frictional wear caused by the relative movement of components significantly limits their use under these conditions due to the poor tribological properties of aluminum and its alloys. For this reason, aluminum metal matrix composites (AMMC) with improved tribological properties are produced by physically adding hard ceramic particles to aluminum and its alloys. Powder metallurgy (PM) is a widely used AMMC manufacturing technique. In this study, B4C, SiC and nano graphite-reinforced Al-Cu-Si-Mg aluminum alloy matrix hybrid composites were produced by the PM method. After weighing, the powders were mixed in a planetary-type ball milling at 56 rpm for 30 minutes and compacted at 600 MPa. The raw samples were sintered at 550 °C for 60 min in a microwave sintering furnace with a power of 2.9 kW and a frequency of 2.45 GHz. Tribological tests and microhardness measurements of the samples were performed. The highest microhardness value of 107.9 HV0.05 was obtained in 1% nGr/3% SiC/6% B4C hybrid reinforced composite. It was observed that the hardness of the composite sample decreased with increasing porosity
at higher reinforcement ratios. It was also found that the wear resistance of the composite samples was
improved with the reinforcements used.