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Mechanical Behavior of AA7075/Glass Fiber Reinforced Polymer Composites
Abstract
This paper reports on the mechanical properties of As-cast and heat-treated AA7075 polymer composites reinforced with glass fibers from 1 to 5 wt%. The polymer composites were fabricated using the Compo casting method, in which short glass fibers were introduced into the vortex created in the molten alloy through an impeller rotated at 500 rpm. The molten mass was thoroughly stirred and poured into permanent molds and squeezed under pressure. The specimens were heat treated at 575°C for 1, 2, 3, and 4 h. The tests on the As-cast polymer composites revealed that as the glass content in the polymer composites was increased, the ultimate tensile strength (UTS), compressive strength, and hardness of the composite increased, while the ductility and impact strength were decreased. Heat treatment was found to improve significantly the ductility, compressive strength, and impact strength, while the hardness and UTS were reduced. This paper discusses the behavior of these polymer composites.
Keywords
References
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