Nickel-based alloy
A nickel-based alloy composition consisting, in weight percent, of: between 7.0 and 1.0% chromium, between 4.0 and 14.0% cobalt, between 1.0 and 2.0% rhenium, between 0.5 and 11.0% tungsten, between 0.0 and 0.5% molybdenum, between 4.0 and 6.5% aluminum, between 8.0 and 12.0 tantalum, between 0.0 and up to 0.5% hafnium, between 0.0 and 0.5% niobium, between 0.0 and 0.5% titanium, between 0.0 and 0.5% vanadium, between 0.0 and 0.1% silicon, between 0.0 and 0.1% yttrium, between 0.0 and 0.1% lanthanum, between 0.0 and 0.1% cerium, between 0.0 and 0.003% sulphur, between 0.0 and 0.05% manganese, between 0.0 and 0.05% zirconium, between 0.0 and 0.005% boron, between 0.0 and 0.01% carbon, the balance being nickel and incidental impurities.
1. A nickel-based alloy composition consisting, in weight percent, of: between 7.0 and 11.0% chromium, between 4.0 and 14.0% cobalt, between 1.0 and 2.0% rhenium, between 5.5 and 11.0% tungsten, between 0.0 and 0.5% molybdenum, between 4.0 and 6.5% aluminium, between 8.0 and 12.0% tantalum, between 0.0 and up to 0.5% hafnium, between 0.0 and 0.5% niobium, between 0.0 and 0.5% titanium, between 0.0 and 0.5% vanadium, between 0.0 and 0.1% silicon, between 0.0 and 0.1% yttrium, between 0.0 and 0.1% lanthanum, between 0.0 and 0.1% cerium, between 0.0 and 0.003% sulphur, between 0.0 and 0.05% manganese, between 0.0 and 0.05% zirconium, between 0.0 and 0.005% boron, between 0.0 and 0.01% carbon, the balance being nickel and incidental impurities.
2. The nickel-based alloy composition according to claim 1 , consisting, in weight percent, of between 7.0 and 8.5% chromium.
3. The nickel-based alloy composition according to claim 1 consisting, in weight percent, of between 4.0 and 12.0% cobalt.
4. The nickel-based alloy composition according to claim 1 , consisting, in weight percent, of between 1.4 and 1.8% rhenium.
5. The nickel-based alloy composition according to claim 1 , consisting, in weight percent of, between 6.0 and 11.0% tungsten.
6. The nickel-based alloy composition according to claim 1 , consisting, in weight percent, of between 5.5 and 6.5% aluminium.
7. The nickel-based alloy composition according to claim 1 , consisting, in weight percent, of between 8.0 and 10.5% tantalum.
8. The nickel-based alloy composition according to claim 1 , consisting, in weight percent, of between 0.0 and 0.2% hafnium.
9. The nickel-based alloy composition according to claim 1 , consisting, in weight percent, of more than 9.0% cobalt.
10. The nickel-based alloy composition according to claim 1 , consisting, in weight percent, of less than 10.0% tungsten.
11. The nickel-based alloy composition according to claim 1 , wherein the sum of the elements cobalt and tungsten, in weight percent, is greater than 17%.
12. The nickel-based alloy composition according to claim 1 , wherein the sum of the elements tungsten and tantalum, in weight percent, is less than 19%.
13. The nickel-based alloy composition according to claim 1 , wherein the sum of the elements aluminium and tantalum, in weight percent, is between 13.5 and 16.5%.
14. The nickel-based alloy composition according to claim 1 , wherein the sum of the elements rhenium, chromium and tungsten, in weight percent, is less than 19%.
15. The nickel-based alloy composition according to claim 1 , wherein the sum of the elements niobium, titanium and vanadium, in weight percent, is less than 1%.
16. The nickel-based alloy composition according to claim 1 , wherein the sum of the elements molybdenum and tungsten is at least 6 wt. %.
17. The nickel-based alloy according to claim 1 , wherein the sum of the elements niobium, titanium, vanadium and tantalum, in weight percent, is between 8.0 and 10.5 wt. %.
18. A single crystal article formed of the nickel-based alloy composition of claim 1 .
19. A turbine blade for a gas turbine engine formed of an alloy according to claim 1 .
20. A gas turbine engine comprising the turbine blade of claim 19 .