DefinePK

Abstract

Aluminium fly ash metal matrix composites (MMCs) find important applications in aerospace and automobiles where specific stiffness is important. Low cost fly ash and silicon carbide reinforcement are widely used in aluminium metal and matrix composite due to its low density, high young modulus and strength apart from good mechanical and chemical compatibility & thermal stability. However the MMCs often suffer from low ductility, toughness and fatigue crack growth resistance relative to the matrix alloy. Such applications require materials offering light weight, high strength to weight ratio with required mechanical properties. The applications of Al-Flyash-SiC MMCs are limited due to their poor machinability. In order to overcome the machining difficulty, Hybrid Al-Flyash- SiC composites are fabricated. The present study deals with the machining characteristics of Hybrid Al-Flyash-SiC MMC of different volume fractions (5%, & 10%) by weight.