Abstract
The present investigation evaluates the effect of milling time, sintering time (t) and temperature (T), and amount of reinforcement (R) on the relative density (RD), hardness (H) and compressive strength (CS) of aluminium matrix hybrid composites both experimentally as well as statistically using response surface methodology (RSM). The powders were milled for various times, i.e., 0.5, 2, 4, 6, 8, 10, 12 &14 h and 10 h milled powder exhibited the desired microstructure. Subsequently, the 10 h milled powders were sintered at 550, 600 & 650 °C for 1 h. The 10 h milled powders were also sintered for various times, i.e., 1, 1.5 & 2 h at 600 °C temperature. The maximum values of RD, H and CS are obtained when the 10 h milled powders are sintered at 600 °C for 1 h. The RSM technique successfully correlates the T, t and R with RD, H and CS.
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