Corrosion Performance of AA6061/Rice Husk Ash Composite for Engineering Application

The major problem confronting aluminium alloy in various fields of engineering is based on the structural and continual failure of a component in service. The difficulties encountered are resolved through addition of RHA as strengthening agent to the aluminium metal matrix composite. The fabrication of MMC (AA6061/RHA) using metallurgical stir casting route in the array of 2, 4, 6 and 8 wt. % of RHA was done. Polarization test carried out in 0.75 M of H2SO4 on the composite shows enhanced corrosion susceptibility. Mechanical properties such as microhardness and tensile were performed on the developed composite. Corrosion analysis of RHA embedded in AA6061 revealed improved corrosion performance. Furthermore, the microstructural change through SEM shows that the incorporation of RHA in AA6061 aluminium alloy minimize corrosion effects. It also shows the homogenous dispersal of the fortification along the grain boundaries and reduced fracture propagation

Analysis on mechanical properties of AA6061/Rice husk ash composites produced through stir casting technique

fabrication was done by stir casting techniques and the mechanical properties of AA6061/rice husk ash were assessed. The cast were produced with liquid metallurgy route through the reinforcement of 2–8 weight percentages of particle sizes of 75 mm rice husk ash. The microstructural test like SEM/EDS and mechanical properties were studied. From the results, the mechanical properties were found to increase at 8% rice husk ash reinforcement. SEM images revealed that homogenous dispersal of particulates without voids occur in cast and an increase up to 8% rice husk ash revealed substantial blending of matrix and reinforcement as evidenced in the microstructure examinatio