Abstract
The auto industry world over is being challenged by emission control and light weighting. Magnesium alloy has been used for a wide variety of applications, mainly due to its low density and high strength – to - weight ratio. Exceptional damping capacity and low inertia makes it suitable for parts undergoing frequent and sudden change in motion direction. An oil pump casting has been developed with AZ91D Mg alloy and validated for the performance that is similar to that delivered by component presently made from ADC12 Al. alloy. The castings are evaluated for properties like density, hardness, internal porosity, weight reduction and tensile Strength. Machining parameters like flatness and surface finish are observed by changing the cutting speed, feed, and cycle time during machining. Electrochemical impedance spectroscopy is carried out to evaluate corrosion resistance of the castings. The current research focuses on light weighting of engine oil pump casting and its performance validation.
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