Nickel-based alloy
A nickel-based alloy composition consisting, in weight percent, of: between 5.0% and 6.9% aluminium, between 0.0% and 11.0% cobalt, between 6.0% and 11.6% chromium, between 0.0% and 4.0% molybdenum, between 0.0% and 2.0% niobium, between 0.6 and 8.6% tantalum, between 0.0% and 3.0% titanium, between 8.4% and 15.2% tungsten, between 0.02 wt. % and 0.35 wt. % carbon, between 0.001 and 0.2 wt. % boron, between 0.001 wt. % and 0.5 wt. %. zirconium, between 0.0 and 0.5% 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 0.25% manganese, between 0.0 and 0.5% copper, between 0.0 and 2.0% hafnium, between 0.0 and 1.0% vanadium, between 0.0 and 4.0% iron, between 0.0 and 1.0% rhenium, the balance being nickel and incidental impurities, wherein the following equations are satisfied in which W Nb , W Ta , W Ti , W Cr , W Mo , W W and W Re are the weight percent of niobium, tantalum, titanium, chromium, molybdenum, tungsten and rhenium in the alloy respectively 6.6≤2W Ti +W Ta +1.44W Nb , 22.2≥W W +W Re +1.16 W Cr +1.7W Mo , 13.9≤W Mo +1.17(W W +3.3W Re ).
1. A nickel-based alloy composition consisting, in weight percent, of: between 5.0% and 6.9% aluminium, between 0.0% and 11.0% cobalt, between 6.0% and 8.8% chromium, between 0.0% and 4.0% molybdenum, between 0.0% and 2.0% niobium, between 0.6 and 8.6% tantalum, between 0.0% and 3.0% titanium, between 8.4% and 15.2% tungsten, between 0.02 wt. % and 0.35 wt. % carbon, between 0.001 and 0.2 wt. % boron, between 0.001 wt. % and 0.5 wt. %, zirconium, between 0.0 and 0.5% 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 0.25% manganese, between 0.0 and 0.5% copper, between 0.0 and 2.0% hafnium, between 0.0 and 1.0% vanadium, between 0.0 and 4.0% iron, between 0.0 and 1.0% rhenium, the balance being nickel and incidental impurities, wherein the following equations are satisfied in which W Nb , W Ta , W Ti , W Cr , W Mo , W W and W Re are the weight percent of niobium, tantalum, titanium, chromium, molybdenum, tungsten and rhenium in the alloy respectively
6.6≤2 W Ti +W Ta +1.44 W Nb
21.0≥ W W +W Re +1.16 W Cr +1.7 W Mo
13.9≤ W Mo +1.17( W W +3.3 W Re )
2. The nickel-based alloy composition according to claim 1 , wherein the following equation is satisfied in which W Al , W Ti W Nb and W Ta are the weight percent of aluminium, titanium, niobium and tantalum in the alloy respectively
6.5≤ W Al +0.5 W Ti +0.3 W Nb +0.15 W Ta ≤6.9
3. The nickel-based alloy composition according to claim 1 , wherein the following equation is satisfied in which W Ti , W Ta and W Nb are the weight percent of titanium, tantalum and niobium in the alloy respectively
7.4≤2 W Ti +W Ta +1.44 W Nb .
4. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 7.0% or more chromium.
5. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 7.7% or less chromium.
6. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 1.4% or more tantalum.
7. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 4.0% or less molybdenum.
8. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 0.1% or more hafnium.
9. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 14.0% or less tungsten.
10. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 1.5% or less hafnium.
11. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 9.3% or more tungsten.
12. The nickel-based alloy composition of claim 1 , consisting, in weight percent, of 5.4% or more aluminium.
13. The nickel-based alloy composition of claim 1 , consisting of, in weight percent, of 1.0% or more iron.
14. The nickel-based alloy composition according to claim 1 , wherein the following equation is satisfied in which W Ta and W W are the weight percent of tantalum and tungsten in the alloy respectively: W Ta +0.9W W ≤16.2.
15. The nickel-based alloy composition of claim 1 , having 1.0 wt % or less niobium.
16. The nickel-based alloy composition of claim 1 , having 0.35 wt % or more titanium.
17. The nickel-based alloy composition of claim 1 , having 5.1 wt % or more cobalt.
18. The nickel-based alloy composition of claim 1 , having 10.2 wt % or less cobalt.
19. The nickel-based alloy composition of claim 1 , having 1.1 wt % or more molybdenum.