Nickel-base superalloy compacted articles

Claim 2

A nickel-base superalloy compacted fully dense article produced by a method including atomizing a molten metal mass of the desired superalloy composition by use of nitrogen gas to form prealloyed particles thereof, heating said particles to elevated compacting temperature, and compacting said particles at elevated temperature to essentially full density to form a compact, said article being characterized by an absence of thermally induced porosity when subsequently heated to a temperature of 1800° F. and above.

Claim 3

The article of claim 1 wherein the superalloy composition thereof consists essentially of, in weight percent: ______________________________________ Element Weight, % ______________________________________ Carbon .05 to .09 Manganese <.02 Silicon <.10 Chromium 11.9 to 12.9 Cobalt 18.0 to 19.0 Molybdenum 2.8 to 3.6 Tungsten <.05 Iron <.30 Titanium 4.15 to 4.50 Aluminum 4.80 to 5.15 Boron .016 to .024 Zirconium .04 to .08 Vanadium .58 to .98 Columbium + Tantalum <.04 Nickel Balance ______________________________________

Claim 4

The article of claim 1 wherein the superalloy composition thereof consists essentially of, in weight percent: ______________________________________ Element Weight, % ______________________________________ Carbon .04 to .09 Manganese <.15 Silicon <.20 Chromium 12.0 to 14.0 Cobalt 7.0 to 9.0 Molybdenum 3.3 to 3.7 Tungsten 3.3 to 3.7 Columbium 3.3 to 3.7 Iron <.50 Titanium 2.3 to 2.7 Aluminum 3.3 to 3.7 Boron .006 to .015 Zirconium .03 to .07 Tantalum <.20 Nickel Balance ______________________________________

Claim 5

The article of claim 1 wherein the superalloy composition thereof consists essentially of, in weight percent: ______________________________________ Element Weight, % ______________________________________ Carbon .03 to .09 Manganese <.15 Silicon <.20 Chromium 14.0 to 16.0 Cobalt 16.0 to 18.0 Molybdenum 4.5 to 5.5 Iron <.50 Titanium 3.35 to 3.65 Aluminum 3.85 to 4.15 Boron .020 to .030 Zirconium <.06 Nickel Balance ______________________________________

Claim 6

The article of claim 1 wherein the superalloy composition thereof consists essentially of, in weight percent: ______________________________________ Element Weight, % ______________________________________ Carbon .03 to .10 Manganese <.75 Silicon <.75 Chromium 18.0 to 21.0 Cobalt 12.0 to 15.0 Molybdenum 3.5 to 5.0 Iron <2.0 Titanium 2.75 to 3.25 Aluminum 1.20 to 1.60 Boron .003 to .010 Zirconium .02 to .12 Nickel Balance ______________________________________

Claim 7

The article of claim 1 wherein the superalloy composition thereof consists essentially of, in weight percent: ______________________________________ Element Weight, % ______________________________________ Carbon .02 to .16 Manganese <.10 Silicon <.10 Chromium 12.2 to 13.0 Cobalt 8.5 to 9.5 Tungsten 3.85 to 4.05 Iron <.50 Titanium 3.9 to 4.2 Aluminum 3.2 to 3.6 Boron .01 to .02 Zirconium .08 to .14 Tantalum 3.85 to 4.05 Hafnium 0.75 to 1.25 Nickel Balance ______________________________________

Claim 8

The article of claim 1 wherein the superalloy composition thereof consists essentially of, in weight percent: ______________________________________ Element Weight, % ______________________________________ Carbon .02 to .08 Manganese <.35 Silicon <.35 Chromium 17.0 to 21.0 Cobalt <1.0 Molybdenum 2.8 to 3.3 Iron 15.0 to 21.0 Titanium 0.75 to 1.15 Aluminum .30 to .70 Boron <.006 Columbium + Tantalum 4.75 to 5.50 Nickel Balance ______________________________________

Claim 9

The article of claim 1 wherein the superalloy composition thereof consists essentially of, in weight percent: ______________________________________ Element Weight, % ______________________________________ Carbon .03 to .07 Manganese <.15 Silicon <.20 Chromium 9.95 to 11.45 Cobalt 14.5 to 15.5 Molybdenum 2.6 to 3.0 Tungsten 5.6 to 6.2 Columbium 1.5 to 1.9 Iron <1.0 Titanium 3.6 to 4.2 Aluminum 3.5 to 4.1 Boron .015 to .025 Zirconium .03 to .07 Hafnium 1.7 to 2.3 Nickel Balance ______________________________________

Claim 10

The article of claim 1 wherein the superalloy composition thereof consists essentially of, in weight percent: ______________________________________ Element Weight, % ______________________________________ Carbon .30 to .35 Manganese <.10 Silicon <.10 Chromium 11.5 to 12.5 Cobalt 9.5 to 10.5 Molybdenum 2.5 to 3.5 Tungsten 5.5 to 6.5 Iron <.5 Titanium 2.75 to 3.25 Aluminum 4.2 to 4.8 Boron .01 to .02 Zirconium .05 to .15 Tantalum 1.0 to 2.0 Nickel Balance ______________________________________