Single-crystal Ni-based superalloy with high temperature...

Details Single-crystal Ni-based superalloy with high temperature... Single-crystal Ni-based superalloy with high temperature...

2007-12-11

2007-12-11

Wyszomierski, George (Department: 1742)

Metal treatment

Stock

Nickel base

C420S443000, C420S444000, C420S448000

Reexamination Certificate

active

10914502

ABSTRACT:
An object of this invention is to provide a single-crystal nickel-based superalloy having high creep rupture strength at high temperatures and excel at corrosion resistance and oxidation resistance at high temperatures.Single-crystal nickel-based superalloys with high temperature strength, hot corrosion resistance and oxidation resistance comprising by weight, 3.0 to 7.0% Cr, 9.5 to 15.0% Co, 4.5 to 8.0% W, 3.3 to 6.0% Re, 4.0 to 8.0% Ta, 0.8 to 2.0% Ti, 4.5 to 6.5% Al, 0.01 to 0.2% Hf, less than 0.5% Mo, 0.01% or less C, 0.005% or less B, 0.01% or less Zr, 0.005% or less O, 0.005% or less N, and balance substantially Ni.

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Japanese Office Action dated Jul. 3, 2007 (three (3) pages).

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