This study focused to determine the flow stress of Al 2075 composites with bottom ash reinforcement. Metal forming process is very important in an industry, materials can be plastic deformed requires several parameters of the forming process, such as the material flow stress. Temperature and strain rate affect the flow stress material. In this paper the tensile test carried out at 350°C, 400°C and 450°C and the strain rate varied 1 mm.s−1, 10−1 mm.s−1 and 10−2 mm.s−1. Tensile test showed that the highest flow stress is obtained at 350°C and a draw rate of 1 mm.s−1, the higher the temperature will decrease the flow stress, while the faster the strain rate increased the material flow stress.
Composites are one kind of new materials that continue constantly to develop. As a new composite material, we propose a solution overcoming the limitations of existing material, namely a composite structure consisting of two or more components with different material properties. In this composite, one component acts as reinforcement and the other as binder. They form a structure with combined properties are better than corresponding composite materials demonstrating several advantages such as light weight, strength, good rigidity and low production cost. T6 heat treatment process ensures the dissolving solution treatment in which the specimen heats at a temperature of 580°C and held for 6 h in state of rapidly cooled specimen with water down to room temperature. Furthermore, we study the process of aging at which the specimen heats again with various temperatures determined for first sampling of nine specimens as a temperature 160°C during 3, 5, and 7 h. Then second sampling of nine specimens heated under temperature 180°C during 3, 5, and 7 h, and third nine specimens was at temperature 180°C during 3, 5, and 7 h, and then slowly cooled to room temperature. From the analysis of the reaction product by EDX testing, the microstructure formed at the interface between matrix and reinforcement before T6 heating and then was treated by the T6 heat treatment at a temperature 200°C with holding time for 3, 5, and 7 h. The result remained the same, namely a new compound, that is, Al 2 MgSiO 4 formed, moreover formed additional element having different concentrations for various holding time.
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