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This research affair to synthesize the magnesium alloy (AZ91) hybrid nanocomposites with 0.5wt% titanium dioxide (TiO2) and 2.5, 5, and 7.5wt% of silicon carbide (SiC) nanoparticles through a semisolid stir cast route under argon (inert) nature and its particle distribution enhanced with uniform stir speed of 400rpm as well as the casting defects reduced by using nature of inert. The excellence of semisolid stir processing with SiC exposure on AZ91/TiO2 composite is analyzed with physical, surface morphological and mechanical exploits. Compared to aluminium-based composites, this composite weight is less, with an acceptable level of voids (less than 1.5%). An effort of processing, the microstructure proved their SiC and TiO2 appearance as uniform. The AZ91/0.5wt%TiO2/7.5wt% SiC exploited maximum hardness of (84±0.8HV), impact toughness of (16.3±0.3J/mm2), and excellent strength (251±5MPa) with reduced elongation percentages of (4.5%). This optimum property sample will be planned for automotive roof frame applications. [ABSTRACT FROM AUTHOR]

Natural fiber-reinforced polymer matrix composites have great potential in various engineering applications due to their lightweight, bio-degradable, non-toxic, and easy availability. However, natural fibers have low inherent behaviour during the preparation of composite. The present investigation is an attempt to enhance an inherent performance of epoxy hybrid nanocomposite with the inclusion of 30 wt% NaOH treated sisal (Agave sisalana) fiber, varied (5, 10, and 15 wt%) weight percentages of nano silicon carbide (SiC) and blended with 5 wt% graphite particles. Compression mould synthesized epoxy composite samples are subjected to surface morphology, flexural strength, toughness, and abrasion studies. The scanning electron microscope results showed the homogenous particle distribution and composite sample 4 (epoxy/30 wt% sisal fiber/15 wt% SiC/5 wt% Gr) is found to have a superior flexural strength of 73.5±0.5 MPa, high fracture toughness of 1.62 MPa m0.5, enhanced wear resistance (0.023 mg/m), and good frictional coefficient. [ABSTRACT FROM AUTHOR]

With the unique class, the reinforcements play a precious role during the composite fabrication, expanding the specific properties. The novel research intensively enhances the micro-structural and mechanical behaviour of magnesium alloy (AZ63/3 wt% boron nitride) nanocomposite featured 2, 4, and 6 wt% of nano-size silicon carbide (SiC) particles via liquid state vacuum stir cast route. The exposure of SiC and BN on composite density, voids contribution, changes in AZ91D microstructure, impact toughness, hardness, and stress-strain individuality of AZ63 alloy nanocomposite is evaluated with ASTM policy. The composite composed with 3 wt% BN and 6 wt% SiC proved their identity. It showed the lower contribution of voids-free homogenous dispersion particle results in a maximum impact strength of 14.7J/mm2, hardness of 74HV, and superb tensile strength of 247MPa. This optimum behaviour will be recommended for automotive roof frame applications. [ABSTRACT FROM AUTHOR]