| 摘要 |
Improved Ni, Fe and Co based superalloys having excellent oxidation resistance and weldability. The superalloys are obtained by at least partially replacing the Ni in conventional superalloys with Pd. The alloys may also contain strengtheners and modifiers such as Co, W, Mo, V, Ti, Re, Ta, Nb, C, B, Zr, Y, and Hf. The superalloy has good strength, improved weldability and excellent oxidation resistance suitable for use in many aerospace and power generation turbine applications. A preferred embodiment comprises (in wt %) 1-9% (Al+Ti), 0-0.01% B, 0-0.15% C, 0-25% Co, 5-30% Cr, 0-10% Fe, 0-0.009% (Hf+Y+Sc), 1-15% (Mo+W), 0-8% (Nb+Ta), 40-68% Ni, 4-32% Pd, 0-10% (Re+Rh), 0-5% V, and 0-0.015% Zr. |
