Sintering Characteristics of Al-2.3%Cu-1.6%Mg-Fly ash Metal Matrix Composite
International Journal for Research in Applied Science and Engineering Technology
In this paper, Aluminium (Al)-2.3% Copper (Cu), 1.6% Magnesium (Mg) with 0,5,10,15 and 20 weight percent fly ash metal matrix composites are fabricated at 300MPa compaction pressure using powder metallurgy technique. The composites are sintered at 560 o C for 45 minutes. The density and compressive strength of both the green and sintered compacts are determined. The density of the composites decreases with the increase in weight percent fly ash. No change in density is observed in the
... ed in the composites before and after sintering. The strength of the composites increases with the increase in fly ash upto 5 weight percent and there after decreases. The sintered strength of all the composite specimens is greater than their corresponding green strength. Fig. 6 Microstructure of 10wt% Fly Ash Green Composite Fig.7 Microstructure of 10wt% Fly Ash Sintered Composite IV. CONCLUSIONS The conclusions drawn from the present work are: A. The Al-2.3%Cu-1.6%Mg-Fly ash metal matrix composites are successfully prepared by powder metallurgy technique. B. The sintering of the composites did not show any change in the dimensions of the composites. C. The strength of the composites increased with the increase in fly ash upto 5weight percent and subsequently decreased. D. The strength of the composites increased with the sintering of the composites. E. The sintering of the composites results in diffusion of particles.