Characterisation of Al Si Alloy Fly Ash and Graphite Metal Matrix Composite for Extrusion Application in Industry

Abstract

Composites have emerged as the most promising material in recent times with the newlineconcept of mixing two or more dissimilar materials, combinations of which offer unique newlineproperties. As a result of advancements, MMCs an engineered combination of metal (matrix) newlinewith hard particles/ceramic (reinforcement), and AMCs, present a significant material option newlinein international market due to its superior physical properties, and mechanical properties with newlinedifferent reinforcement options. These options are gaining momentum in the recent times. newlineMetallic systems commonly explored so far for use in metal matrix composites are newlineAl, Be, Mg, Ti, Fe, Ni, Co, and Ag. Among which Aluminum, and its alloys, both casts, and newlinewrought are emerging as matter of choice both for fundamental, and practical reasons as newlinematrix materials for MMCs due to their inherent light weight, good corrosion resistance, ease newlineof handling, and a wide range of present, and future applications. newlineAluminum alloys with Silicon as major alloying element form a significant class of newlinecasting materials with excellent combination of mechanical properties, cast ability, wear newlineresistivity, as well as good corrosion resistance, and is a subject of many research programs. newlineReinforcements that are low density in nature, high thermal stability, with newlinemechanical compatibility, highly compressive, good tensile strength, economic efficiency, newlineetc. can be embedded into the metallic matrix to fortify and enhance properties of the final newlineproduct. Reinforcements commonly used in composites so far are aluminum oxide (Al2O3), newlinecarbides of Silicon (SiC), Titanium (TiC), Boron (B4C), silicon carbide, titanium carbide, newlineboron carbide, Graphite, Mica, Glass (both in discontinuous, and continuous form) etc. newlineLately, quest for environment friendly and economical products to be used as newlinereinforcement material has focused on the use of Flyash as reinforcement in strengthening newlinemetal alloys, and the same has been used in the present research work along with Graphite, newlineand assessed for the eff