Konya Mühendislik Bilimleri Dergisi

Browse

Now showing 1 - 1 of 1

Powder Metallurgical Fabrication and Characterization of Graphene Nano Platelets Reinforced Al- 5.5cu-0.5mn Matrix Composites
(Konya Technical University, 2021) Akçamlı, Nazlı
In this study, graphene nano platelets (GNPs) reinforced Al-5.5wt.%Cu-0.5wt.%Mn matrix composites were produced by the powder metallurgy method. Al-5.5Cu-0.5Mn-xGNP (x: 0, 0,5 1 ve 2 wt.%) composite powders produced by mechanical alloying of the starting powders up to 8 h were pre- compacted via uniaxial pressing under 650 MPa and subsequently pressurelessly sintered at 600 °C for 2 hours under Ar atmosphere. The microstructural, mechanical and corrosion properties of Al-5.5Cu-0.5Mn-xGNP composites were investigated via X-ray diffractometer (XRD), scanning electron microscope-energy dispersive spectrometer (SEM-EDS), microhardness and corrosion tests, respectively.Al2Cu intermetallic phase was detected in the microstructure of the composites and carbide phase formation was observed in the mechanically alloyed composites. The optimum mechanical alloying duration was determined as 4 hours and it was observed that the hardness of these composites increased by the increasing graphene amount and reached to 123 HV for Al-5.5Cu-0.5Mn-2GNP sample. Moreover, the corrosion resistance of Al-based matrix worsened by the graphene addition.