Nickel-based superalloys and articles
AssigneeGeneral Electric Company
InventorsWei-Jun Zhang, Douglas Gerard Konitzer
Life of this patent
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Abstract
A nickel-based superalloy composition is provided that includes 6.1 wt. % to 6.6 wt. % aluminum; 5.6 wt. % to 6.6 wt. % tantalum; 9.0 wt. % to 11.0 wt. % chromium; 5.5 wt % to 6.2 wt. % tungsten; 1.1 wt. % to 1.4 wt % molybdenum; 2.0 wt. % to 2.6 wt % rhenium; 5.5 wt. % to 10.0 wt % cobalt; 0.2 wt % to 0.5 wt % hafnium; up to 0.05 wt % carbon; 0.002 wt % to 0.01 wt % boron; and a balance of nickel and incidental impurities, wherein the composition exhibits a rupture life that is greater than 40 hours at 982.2° C. and 40 ksi, and wherein the composition exhibits a corrosion resistance of less than 50.8 μm attack at 926.7° C. after a 940 hour burner rig test. Components are also provided formed from the composition.
Claims19
A nickel-based superalloy composition, comprising:
- 6.1 wt. % to 6.6 wt. % aluminum;
- 5.6 wt. % to 6.6 wt. % tantalum;
- 10.0 wt. % to 11.0 wt. % chromium;
- 5.5 wt % to 6.2 wt. % tungsten;
- 1.1 wt. % to 1.4 wt % molybdenum;
- 2.0 wt. % to 2.6 wt % rhenium;
- 5.5 wt. % to 10.0 wt % cobalt;
- 0.2 wt % to 0.5 wt % hafnium;
- 0.03 wt % to 0.05 wt % carbon;
- 0.002 wt % to 0.01 wt % boron;
- and
- a balance of nickel and incidental impurities,
- wherein the nickel-based superalloy composition exhibits a rupture life that is greater than 40 hours at 982.2° C. and 40 ksi, and wherein the nickel-based superalloy composition exhibits a corrosion resistance of less than 50.8 μm attack at 926.7° C. after a 940 hour burner rig test.
A nickel-based superalloy composition, consisting of:
- 6.1 wt. % to 6.6 wt. % aluminum;
- 5.6 wt. % to 6.6 wt. % tantalum;
- 10.0 wt. % to 11.0 wt. % chromium;
- 5.5 wt % to 6.2 wt. % tungsten;
- 1.1 wt. % to 1.4 wt % molybdenum;
- 2.0 wt. % to 2.6 wt % rhenium;
- 5.5 wt. % to 10.0 wt % cobalt;
- 0.2 wt % to 0.5 wt % hafnium;
- 0.03 wt % to 0.05 wt % carbon;
- 0.002 wt % to 0.01 wt % boron;
- and
- a balance of nickel and incidental impurities,
- wherein the nickel-based superalloy composition exhibits a rupture life that is greater than 40 hours at 982.2° C. and 40 ksi, and wherein the nickel-based superalloy composition exhibits a corrosion resistance of less than 50.8 μm attack at 926.7° C. after a 940 hour burner rig test.
A component comprising 80 vol. % to 100 vol. % of a single crystal of a nickel-based superalloy composition, wherein the nickel-based superalloy composition comprises:
- 6.1 wt. % to 6.6 wt. % aluminum;
- 5.6 wt. % to 6.6 wt. % tantalum;
- 10.0 wt. % to 11.0 wt. % chromium;
- 5.5 wt % to 6.2 wt. % tungsten;
- 1.1 wt. % to 1.4 wt % molybdenum;
- 2.0 wt. % to 2.6 wt % rhenium;
- 5.5 wt. % to 10.0 wt % cobalt;
- 0.2 wt % to 0.5 wt % hafnium;
- 0.03 wt % to 0.05 wt % carbon;
- 0.002 wt % to 0.01 wt % boron;
- and
- a balance of nickel and incidental impurities,
- wherein the component exhibits a rupture life that is greater than 40 hours at 982.2° C. and 40 ksi, and wherein the component exhibits a corrosion resistance of less than 50.8 μm attack at 926.7° C. after a 940 hour burner rig test.
Dependencies are inferred from the claim text.