Abstract
Aluminium and its alloys possess high specific strength, good mechanical properties, better machining characteristics and high resistance to corrosion. Hence they are widely used in various industrial applications such as aviation, marine, construction, etc. Aluminium alloys found their extensive use due to precipitation hardening technique. In this work Al-Si-Mg alloy (A356.0) is used. The major constituents of this alloy are silicon and magnesium and it is grouped under 3xx.x series. It has excellent mechanical and chemical properties such as specific strength, toughness, heat treatable, flowability and resistance to corrosion. In present study, Al-Si-Mg alloy test specimens are cast in metallic mould and machined according to ASTM standards by solutionizing, quenching and artificial aging. The specimens are solutionized at 500, 520 and 540°C for 5 hours. Specimens with highest solutionized temperature (540°C) are quenched at 60°C and aged at 171°C for 4, 5 and 6 hours to determine the influence of solutionizing temperature and aging time on the hardness and ultimate tensile strength (UTS). The wear test is conducted on typical pin-on-disc machine. Disc diameter, rpm of disc, constant track radius and constant load applied are some of the important test parameters to be considered for the wear test. The specimens are observed under optical microscope for microstructure. The data thus generated are utilized to study the variation of mechanical properties under different heat treatment parameters.
Published Version
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