Influence of Reinforcement Type on Microstructure, Hardness, and Tensile Properties of an Aluminum Alloy Metal Matrix Composite

摘要: This paper presents the results of comparative study as cast microstructures and mechanical properties viz yield strength, ultimate tensile elastic modulus, percentage elongation, hardness, porosity fracture characteristic 5 wt% SiC Al2O3 particulate reinforced Al-4% Cu-2.5% Mg matrix composites. These composite materials were prepared through stir casting process. Quantitative metallographic techniques utilized to determine average grain size particles. The representative samples composites examined using optical microscope (OM), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) diffraction (XRD) techniques. experimental demonstrate a fairly uniform distribution 50.8 μm 49.2 spherical particles with some clustering in few areas. At interfaces matrix, MgO MgAl2O4 observed. Similarly, Al4C3 was formed at between matrix. property test revealed that, for same weight reinforcement, Mg/5 exhibit 15.8%, 16.4%, 4.97% 10.8% higher respectively. On other hand, even if observed composite, elongation (ductility) 31% than that rein-forced composite. specimen failed brittle fashion without neck formation, whereas ductile noticeable formation.