Production and Characterisation of Aluminium Alloy - Bagasse Ash Composites

Abstract

The study was carried out to determine the density and mechanical properties of Al-7%Si alloy-Bagasse Ash (BA) composite produced at 800 o C. BA obtained at 700 o C and having high silica and alumina contents of up to 77.29% and 10.95%, respectively was used as reinforcement and varied from 0vol% to 30vol%. The density and some mechanical properties of the produced composites were determined. The results showed that the density decreases with percentage increase in reinforcement from 2840.242kgm-3 to 2292.208kgm-3 with the minimum value at 30vol% BA. The results of the mechanical properties tests showed that, the ultimate tensile strength (UTS) varies from 139.677MNm-2 to 176.683MNm-2 with maximum value at 10vol% BA, Young modulus varies from 1429.890MNm-2 to 1725.425MNm-2 with maximum value at 10vol% BA, impact strength varies from 75.401kJm-2 to 128.262kJm-2 with maximum value at 10vol% BA and hardness varies from 70.467RHV to 90.767HRV with maximum value at 20vol% BA and with all the hardness values better than that of the control sample. The results also showed that, the fatigue strength varies from 0.066x10 6 cycles to 1.797x10 6 cycles with maximum value at 15vol% BA and the percentage elongation having approximately the same value.The results of the statistical analysis showed that there are significant differences among the means of each property of the composites at various levels of BA replacement (P<0.05).It was concluded that bagasse ash can be used as reinforcement in aluminium composites and the produced composites could be used in automobile industry for the production of engine blocks, pistons, among others.

A review on monolithic and hybrid metal–matrix composites reinforced with industrial-agro wastes

“…1. A decrease in the density of Al-7%Si-bagasse ash composite with the increased percentage of reinforcement was also recorded by Usman et al [21]. The best result of decrease in the density was obtained at 30 vol.% of bagasse ash by the same author.…”

“…Studies [13,16,19,21,32,34,40,42] [13]. An improvement in the compressive strength of the composites developed by modified compo-casting followed by squeeze casting has been observed.…”

“…Evaluation of mechanical behaviour of Al-7%Si composites reinforced with bagasse ash has been conducted by Usman et al [21,40]. Improvements in the ultimate tensile strength, young's modulus, impact strength and hardness values of the developed composites were observed during mechanical testing of samples.…”

Optimizing Some Process Parameters in Aluminium Bagasse Ash Reinforced Composite

“…Aluminum alloy has vast engineering applications particularly in space industries, automobiles, marine components, sports equipment, and household utensils (Sunil, Keshavamurthy, Prakash, and Channabasappa, 2015). Bagasse ash composed mostly of oxides of silicon (SiO2), iron (Fe2O3), aluminum (Al2O3), and others as detailed by (Usman, Raji, Waziri, and Hassan, 2014). Bagasse used as reinforcement has provided an alternative for synthetic reinforcement like alumina (Al2O3) and silicon carbide (SiC), and widely available and cheap (Singh, Kumar, Kumar, Maurya, and Dwivedi, 2017).…”

Study of Hardness and Optimization of Wear Properties of AL 7075 Hybrid Composite

“…A. Baradeswaran et al [5] Studied on mechanical and tribological behavior of Aluminium 7075 hybrid composites with 2-8 percentages by weight of Al2O3 particles and 5 percent by weight of graphite and found that hardness and tensile strength of composites increased with increasing Al2O3 content. Some works have been carried out to study the characterization of Al 7075 MMC [6]. The various specimens of the composite with varying weight percentages of reinforced material were made and experiments were conducted using L9 orthogonal array and the properties of the composite and their significant changes were evaluated [7].…”