Aluminium based metal matrix composites are widely used in automobile components such as cardan shaft of Chevrolet corvette,
disc brake and engine push rod. In this experiment a Hybrid Metal Matrix Composites (HMMC) are fabricated and drilled. Drilling
is the process of making slots in disc brake and thread in the engine parts. The surface quality of the drilled specimen depends on
the speed, feed, drill type and the thrust force. Thrust force plays the major role in drilling the specimen. In this experiment HMMCs
are fabricated using two processes-called, sonication and casting. Sonication is the process of coating the carbon nanotubes
over the silicon carbide particles (SiCp). Semisolid stir casting is used to reinforce the coated SiCp in the LM 25 alloy. A drilling
process is performed on HMMC to analyse the extent to which the input parameters influence the thrust force and Ovality. The
tools used for drilling are solid carbide tools of three different diameters. Taguchi’s experimental design is adopted for the drilling
operation. A mathematical model is used to determine the influence of input parameters on the outputs thrust force and ovality.
This paper proves the combination of N3 , f1 and d1 of the carbide tool results in the lowest value of thrust force and ovality while
drilling HMMCs. In this work the HMMC is prepared by coating the abrasive nature, silicon carbide particle and there is a good
interfacial bonding between the reinforced particle and matrix and the drilling process becomes smoother. The new being of this
article is the treated ceramics, SiCp with carbon nanotubes. This HMMC shows the improved mechanical properties compared to
other metal matrix composites surveyed in the literatures.
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