Corrosion study on AA5083 aluminum alloy - boron carbide composite

Abstract

Abstract The aluminum alloy AA5083 has attracted a lot of attention because of its good corrosion resistance, super plasticity, high strength and weld ability. In the present study the preparation of AA5083 aluminum alloy based composites using ceramic particles of Boron carbide (B4C) particles of (7 %, 9 % & 10 % composition) were added in metal matrix to enhance the mechanical properties of aluminum alloy such as specific strength, stiffness, hardness, adhesive, abrasive and thermal properties. Stir casting method is used in this study for fabrication of Aluminum alloy 5083 based composites. The microstructural characterization was investigated for the composite using standard metallurgical preparation and imaging methods. As the aluminum alloy AA5083 is well known for its corrosion resistance, the salt spray test study has been conducted to evaluate the corrosion resistance of the aluminum alloy 5083 based composites. The test result shown that the corrosion resistance of the composite is decreased due to increasing content of B4C particles.