COMPACTING CHARACTERISTICS OF AL-15%Pb-FLY ASH METAL MATRIX COMPOSITES
Keywords:
Metal Matrix Composites, Fly Ash Content, Ejection Pressure, Green DensityAbstract
Metal Matrix Composites (MMCs) are engineering materials formed by combination of two or more dissimilar materials of which atleast one is a metal. In the present investigation Al-15%Pb powders containing 0, 5, 10, 15 and 20 weight % Fly Ash were prepared. The powder mixtures were compacted at pressures ranging from 200-400 Mpa. The effects of compaction pressure and fly ash content on green properties of compacts were determined. It was found that green density, ejection pressure and spring back increased and true porosity decreased with increasing compaction pressure. For a fixed compaction pressure increasing fly ash content was found to decrease ejection pressure and green density.
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