Patent ID: 6468368
Filing Date: 2002-10-22
Classification: B22F,C22C

Abstract:
A polycrystalline alloy composition comprising:Ni, Co, Cr, Mo, W, Re, Al, Ti, Ta, Nb, C, B, Zr, O and N, wherein the weight ratio of Mo to (W+Re) is in the range of about 0.25-0.5 such that the alloy composition is substantially without notch sensitivity in enhanced temperature condition, the Ta is less than 6 wt %, and wherein the composition includes 2.0-3.0 wt % Mo, 4.5-7.5 wt % (W+Re), 14.0-18.0 wt % Co, 10.0-11.5 wt % Cr, about 3.45-4.15 wt % Al, about 3.6-4.2 wt % Ti, about 0.45-1.5 wt % Ta, about 1.4-2.0 wt % Nb, about 0.03-0.04 wt % C, about 0.01-0.025 wt % B, about 0.05-0.15 wt % Zr, and the balance Ni.