Gamma prime strengthened nickel superalloy for additive manufacturing
AssigneeGeneral Electric Company
InventorsAndrew Ezekiel Wessman, Timothy Hanlon, Laura Cerully Dial
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Abstract
An additive manufactured product, along with methods of its formation, is provided. The additive manufactured product may include a fused multilayer component comprising a nickel superalloy having a composition comprising, by weight: 7% to 11% of cobalt; 9% to 14% of chromium; 1.5% to 8% of molybdenum; up to 8% of tungsten; 4% to 6% of aluminum; 1% to 4% of titanium; up to 4.6% tantalum; up to 2% hafnium; up to 0.04% zirconium; up to 0.05% carbon; up to 0.04% boron; up to 1% niobium; and the balance nickel along with unavoidable residual elements in trace amounts. This composition may have a sum of the weight percentages of zirconium and boron that is up to 0.06%.
Claims20
An additive manufactured product, comprising:
- a fused multilayer component comprising a nickel superalloy, wherein the nickel superalloy has a composition comprising, by weight:
- 7% to 11% of cobalt;
- 9% to 14% of chromium;
- 1.5% to 8% of molybdenum;
- up to 8% of tungsten;
- 4% to 6% of aluminum;
- 1% to 3% of titanium;
- up to 4.6% tantalum;
- up to 2% hafnium;
- up to 0.04% zirconium;
- up to 0.05% carbon;
- up to 0.04% boron;
- up to 1% niobium;
- and the balance nickel along with unavoidable residual elements in trace amounts, wherein the composition has a sum of the weight percentage of zirconium and boron that is up to 0.06%.
An additive manufactured product, comprising:
- a fused multilayer component comprising a nickel superalloy, wherein the nickel superalloy has a composition comprising, by weight:
- 9% to 11% of cobalt;
- 10% to 12% of chromium;
- 2.5% to 3.5% of molybdenum;
- 5.5% to 6% of tungsten;
- 5% to 6% of aluminum;
- 1% to 2% of titanium;
- 0.005% to 0.015% zirconium;
- 0.01% to 0.03% carbon;
- 0.005% to 0.015% boron;
- and the balance nickel,
- wherein the fused multilayer component has an areal microcrack density of less than 0.1%.
A method of forming an additive manufacturing product, the method comprising:
- forming a layer of powder;
- bonding a portion of the powder to form a bonded layer portion;
- and
- repeating the forming and bonding steps to form a fused multilayer component comprising a plurality of the bonded layer portions,
- wherein the powder comprises a nickel superalloy having a composition comprising, by weight:
- 7% to 11% of cobalt;
- 9% to 14% of chromium;
- 1.5% to 8% of molybdenum;
- up to 8% of tungsten;
- 4% to 6% of aluminum;
- 1% to 3% of titanium;
- up to 4.6% tantalum;
- up to 2% hafnium;
- up to 0.04% zirconium;
- up to 0.05% carbon;
- up to 0.04% boron;
- up to 1% niobium;
- and the balance nickel,
- wherein the composition has a sum of the weight percentage of zirconium and boron is up to 0.06%.
Dependencies are inferred from the claim text.