CASTING MATERIAL USED IN NUCLEAR TURBINE AND PREPARATION METHOD THEREFOR

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Disclosed is a preparation method for a casting material used in a nuclear turbine. The preparation method comprises the following steps : placing, by mass percent, 11.5% - 13.5% of aluminum, 2% - 5.5% of iron, 1.5% - 3.5% of manganese, 0.3% - 1.5% of nickel and the balance of copper into a main frequency induction furnace, heating same to 1, 100 degrees centigrade until same has completely melted, and then maintaining the temperature, and adding silicon carbide ceramic particles with a purity of 99.9% and rare earth element lanthanum or cerium thereto.