Patent ID: 9103002
Filing Date: 2015-08-11
Classification: B22C,C22C,F04D

Abstract:
1. A product comprising: a heat treated and rapidly quenched compressor wheel for a vehicle turbocharger comprising a hub, a base, and a plurality of aerodynamically contoured blades, the compressor wheel having a nominal composition of about 5.5 to 6.63 mass percent aluminum, about 3.5 to 4.5 mass percent vanadium, about 1.0 to about 2.5 mass percent chromium, maximum of 0.50 mass percent iron, about 0.06 to about 0.12 mass percent silicon, at least 80 mass percent titanium, impurities of up to about 0.08 mass percent carbon, up to about 0.08 mass percent manganese, up to about 0.04 mass percent nitrogen, and up to about 0.013 mass percent hydrogen; and wherein the compressor wheel has a microstructure comprising a bi-lamellar distribution of primary α platelets and secondary α platelets in a β lamellae matrix.