Abstract:
In this study, vertical centrifugal casting process
is used for the fabrication of functionally graded A390
alloy hollow cylinder and Mg & Sr-included A390 alloy
hollow cylinder. The commercial CFD software
FLOW3DTM is used to obtain the optimum rotational speed
for making an optimized hollow cylinder in a vertical
centrifugal casting machine. The optimum rotational speed
obtained is 1300 rpm. This rotational speed is used in the
experiments to obtain hollow cylinders of optimized
thickness for (a) A390 alloy (b) by adding various weight
percentages of Mg and Sr in A390 alloy. The optical
microstructures obtained at various radial locations are
presented for centrifugally cast A390 alloy. The effect of
individual addition of Mg & Sr into A390 alloy on the
microstructures at various locations along the radial
direction of centrifugally cast cylinder is discussed in
detail.
