Investigation on Microstructural and Mechanical Properties of Microwave Welded Al6061-SiC-Graphite Hybrid Metal Matrix Composites

In the present work, microstructure and mechanical properties of microwave welded Al6061-6%Graphite-SiC hybrid metal matrix composites (MMC) were investigated. The welding was carried out using principle heating Al6061 powder as an interfacial material. domestic oven having frequency 2.45 GHz 900 W power used for experiments. charcoal a susceptor during process. MMCs Al6061-6%Gr-SiC developed through stir casting process with different weight percentage SiC keeping graphite constant. joints characterized x-ray diffraction, scanning electron microscope (SEM) equipped energy-dispersive spectrum (EDS), Rockwell hardness tester universal testing machine. diffraction analysis showed presence harder aluminum carbide oxide phases. microstructural study revealed good metallurgical bonding between absence cracks. elemental joint aluminum, carbon oxygen other elements. average ultimate tensile strength recorded 135 MPa 4.3% elongation. at weld observed 61.5 ± 5 HRB. evaluation indicated increase in content reinforcement increased. found to be 65.15% parent composite, which is similar aluminum-based by various techniques such friction welding, laser beam etc. investigation has that energy can successfully, alternative method composites.