Abstract
In this paper, the various methods of fabrication & characterization of Al 7075-cenosphere composite & its comparison with pure Al 7075 alloy are reviewed. Composites are most successful & widely used materials used for recent works in the industry as these possess significantly improved properties including high tensile strength, toughness, hardness, low density and good wear resistance compared to alloys or any other metal. There has been an increasing interest in composites containing low density and low cost reinforcements. Al 7075 alloy as matrix and cenosphere as reinforcement has been identified since it has potential applications in aircraft and space industries because of lower weight to strength ratio, high wear resistance and creep resistance. Among various reinforced materials used, cenosphere (a small proportion of the pulverised fuel ash (PFA) produced from the combustion of coal in power stations) is one of the most inexpensive and low density reinforcement available in large quantities as waste product during combustion of coal in thermal power plants. Hence, composites of Al 7075 with cenosphere as reinforcement are likely to overcome the cost barrier as well as the different physical and mechanical properties for wide use in the today’s world & serve a wide range of applications.
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