Abstract
We are proposing a centrifugal mixed-powder method as a novel processing technique to fabricate a nano-particle distributed FGM. If the mixed-powder has been changed into machining chips, an eco-centrifugal casting method can be achieved, since the reduction of necessary power for casting will be expected if recycled materials are used in the melting and casting process. Pure Al or Al-Si alloy melt of 750°C or 800°C is poured into the spinning mold with or without the machining chips. It is found that Al pipe can be fabricated by the centrifugal casting with machining chips. It is also found that the machining chips act as the grain-refiner. Although some pores were found for the cast with the machining chips, the defect can be reduced when the mold is preheated. In this way, Al pipes without casting defect can be fabricated by the proposed method.
