Abstract
The unstoppable quest for low-cost reinforcing agent gingered the enthusiasm towards developing and utilising the agro-based waste product as reinforcement since they are promptly accessible, sustainable, and inexpensive to purchase. In this study, AA6061/rice husk ash matrix composites were produced through metallurgical stir casting techniques. Different weight percentages of reinforcement in the range of 2%, 4%, 6%, and 8% were used to fabricate the composites. The reinforced composites were characterized by SEM/EDS for microstructural study. The mechanical behaviour was examined for all the produced samples. SEM/EDS analysis revealed the presence of silica, a major constituent of rice husk ash in the produced composites. The results of the mechanical behaviour show that upgrading the weight percentage of reinforcing agent increases the mechanical properties. AA6061/8% rice hush ash generated a consistent rise with filler concentration in comparison with the aluminium alloy in all operating functions.
Highlights
E utilization of modern technologies for reducing severe failures in major engineering component is necessary for metal construction industries as a result of its innovative qualities, and studies have revealed that aluminium alloy is the cheapest and global valuable materials [3, 4]
Senapati et al explore the use of agro-based discarded Rice husk ash (RHA) and fly ash to strengthen the aluminium alloy used in the manufacturing industry. e author deduced that the addition of fly ash and rice husk particulates in the aluminium alloy advances the matrix hardness and the wear properties of the composite [18]
Prasad and Krishna examined the mechanical features of AA356.2/RHA composites. e authors observed more anticipated surface morphology and mechanical characteristics than the as-received sample. e result depicts that the presence of RHA particles leads to the improvement in hardness and strength of the developed composite [2]
Summary
The reinforcement material is rice husk ash. It is made from rice mill plant in Abakaliki, Ebonyi State. Washed rice husk is heated to 200°C for one hour to get rid of the moisture. Mechanical properties for prepared composites of varying reinforcements were assessed in hardness and tensile properties. E production of AA6061/rice husk ash was done effectively by stir casting method. En the preheated rice husk ash is poured to the melt at a temperature of 720°C.
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