Characterization of Al-Si Functionally Graded Material Using Centrifuge Casting Method

Aithal S. Kiran(1*), S. Narendranath(2), Vijay Desai(3), P. G. Mukunda(4)

(1) Bangalore University, India
(2) Bangalore University, India
(3) Bangalore University, India
(4) Bangalore University, India
(*) Corresponding author

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Functionally Graded Materials (FGMs) are the emerging materials in which material properties vary continuously with position, in one direction. The present study is to fabricate a Functionally Graded Al/Si in situ material and to characterize it. Al /17wt.%Si alloy has been used to fabricate Al/Si FGM by centrifuge casting process specially designed for the purpose. The microstructural characteristic and hardness profile of these FGMs have been evaluated. The study shows the structure of this Al/Si alloy produced by this method changes from Hyper-Eutectic through to Hypoeutectic, with later having primary Al dendrites. It also reveals that hardness and the primary Si particles vary along the length of the sample
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Centrifuge; Functionally Graded Material (FGM); G Force; Hardness

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