Nickel based braze alloy, a component and a method

Abstract

A Nickel base Brazing Filler Metal (BFM) includes about 12 to 16 wt % Chromium (Cr); up to about 5 wt % Fe; up to about 2 wt % Mo; about 1 to 5 wt % Tungsten (W); about 3 to 6 wt % Aluminum (Al), about 3 to 6 wt % Tantalum (Ta); about 0.05 to 1.5 wt % Hafnium (Hf), about 0.01 to 0.1 wt % Carbon (C); about 0.005 to 0.05 wt % Zirconium (Zr); about 0.005 to 0.05 wt % Silicon (Si); about 0.01 to 0.05 wt % of the sum of rare earths such as Sc, Yttrium (Y), the actinides and the lanthanides; about 1.7 to 2.6 wt % Boron (B); the balance being essentially Nickel (Ni) and unavoidable impurities. Its use for high strength Transient Liquid Bonding (TLB) brazing by use of capillary action on gamma prime strengthened Nickel base Superalloys in the 1180 to 1220° C. range as part of production and repair processes for hot gas path components.

Dependencies are inferred from the claim text.