Abstract
In this work, aluminum (Al) alloy reinforced with boron carbide (B4C) nanoparticles were fabricated using ultrasonic assisted casting process. To investigate the effect of ultrasonic power on processing the metal matrix nanocomposites (MMNCs), the MMNC samples were processed with 1.0 kW, 1.5 kW and 2.0 kW of ultrasonic power. The results indicate that the ultrasonic power play a significant role in dispersing the B4C nanoparticles uniformly in Al melt and it also affects the mechanical properties of the fabricated MMNCs. From microstructural analysis it was observed that the MMNC sample processed with 2.0 kW ultrasonic powers possessed the good dispersion of B4C in the Al melt which is the prime criteria for the good mechanical properties.
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