Abstract: An alloy mix suitable for the repair of nickel-based alloy components is disclosed. The alloy mix contains a mixture of two alloy powders. The constituents of the first powder, in percentages by weight are:______________________________________ Al 2-3 Co 9-11 Cr 8-10 Fe 0-1.8 Hf 1.0-1.5 Ta 1.-1.5 Ti 1.25-1.75 W 6-8 B 2.8-3.4 Y 0.001-0.02 Ni Remainder ______________________________________and the constituents of the second powder, in percentages by weight, are: ______________________________________ C .13-.17 Al 5.25-5.75 B 0.01-0.02 Co 9.0-11.0 Cr 8-10 Hf 1.3-1.7 Ta 2.25-2.75 Ti 1.25-1.75 W 9.5-10.5 Zr 0.03-0.

Abstract: A nickel based alloy is devised, for the purpose of using it as a brazing foil to join parts of a nickel based superalloy component together to make a whole, or for using it as a powder bound by an acrylic or water based binder, to build up damaged surfaces of a nickel based superalloy. In each case, the finished product has the mechanical strength characteristics of the base metal.

Abstract: Superalloy components which have defects such as pits, machining errors or any other `lack of metal` condition can be repaired using a braze stabilized sinter process. The invention includes filling the defect with a mixture of base super-alloy powder mixed with a low temperature braze alloy. A higher temperature alloy is overlayed and the component subjected to a vacuum furnace cycle that includes a dwell between the melting points of the two braze alloys. This dwell allows the lower temperature alloy to melt and isothermally solidify by the process of diffusion. This effectively `stabilizes` the sinter which is porous. On further heating, the higher temperature braze alloy melts and flows into the interstices of the sinter, forming a pore-free solid mass. The higher temperature braze alloy can also be diffused by holding at elevated temperatures. This increases the remelt temperature of the repair should further thermal cycling be required.