Abstract
Functionally graded materials (FGMs) are innovative and manipulated modern engineering materials with customized performance or function due to the spatial gradation in morphology. The present research work attempts to fabricate the FGMs with and without interfacing layers by adopting the gravity casting methodology. The fabricated FGM samples were investigated for microstructural and mechanical characteristics, namely, with Cu and Al foils and without an interfacing layer. The FGM samples with Cu, Al foils, and without interfacing foils exhibited microhardness values of 85Hv, 88Hv, and 92Hv, respectively. The microhardness of the fabricated FGM sample without interfacing foil, compared to the FGM sample made with interfacing foil, namely, Cu and Al, is observed as high. The said result may be due to the presence of the intermetallic compounds in the absence of interfacing foil which is confirmed by Scanning Electron Microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDS)analysis.
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