Nickel-base alloys
Nickel-base alloys are provided. One embodiment of a nickel-base alloy comprises, in weight percent based on total weight of the nickel-base alloy: 8% to 24% molybdenum; 0 to 12% tungsten; 3.5% to 10% chromium; 2% to 10% vanadium; 0 to 10% iron; and nickel.
1. A nickel-base alloy consisting of, in weight percent based on total weight of the nickel-base alloy:
13% to 20% molybdenum;
5% to 12% tungsten;
6% to 10% chromium;
2% to 10% vanadium;
0 to 10% iron;
0 to 2% niobium;
0 to 2% titanium;
0 to 10% cobalt;
0 to 3% tantalum;
0.01% to 0.5% silicon;
0 to 2% copper;
0 to 1% rhenium;
0 to 0.5% hafnium;
0 to 0.5% zirconium;
0 to 0.2% magnesium;
0 to 0.1% boron;
0 to 0.5% carbon;
0 to 1% rare earth elements;
0 to 1% aluminum;
0 to 2% manganese;
impurities; and
nickel.
2. The nickel-base alloy of claim 1 , wherein a molybdenum content is 13% to 19%, in weight percent based on total weight of the nickel-base alloy.
3. The nickel-base alloy of claim 1 , wherein a molybdenum content is 14% to 18%, in weight percent based on total weight of the nickel-base alloy.
4. The nickel-base alloy of claim 1 , wherein a tungsten content is 6% to 11%, in weight percent based on total weight of the nickel-base alloy.
5. The nickel-base alloy of claim 1 , wherein a chromium content is 6% to 8.5%, in weight percent based on total weight of the nickel-base alloy.
6. The nickel-base alloy of claim 1 , wherein a chromium content is 6% to 8%, in weight percent based on total weight of the nickel-base alloy.
7. The nickel-base alloy of claim 1 , wherein a vanadium content is 3% to 7%, in weight percent based on total weight of the nickel-base alloy.
8. The nickel-base alloy of claim 1 , wherein a vanadium content is 3.5% to 6%, in weight percent based on total weight of the nickel-base alloy.
9. The nickel-base alloy of claim 1 , wherein a niobium content is up to 0.3%, in weight percent based on total weight of the nickel-base alloy.
10. The nickel-base alloy of claim 1 , wherein an iron content is 0.5% to 3%, in weight percent based on total weight of the nickel-base alloy.
11. The nickel-base alloy of claim 1 , consisting of, in weight percent based on total weight of the nickel-base alloy:
14.5% to 17% molybdenum;
7% to 11% tungsten;
6% to 8% chromium;
3.5% to 5.5% vanadium;
0 to 0.3% niobium;
0.5% to 3% iron;
0 to 2% titanium;
0 to 0.5% cobalt;
0 to 0.5% tantalum;
0.01% to 0.5% silicon;
0 to 0.5% copper;
0 to 0.5% rhenium;
0 to 0.5% hafnium;
0 to 0.5% zirconium;
0 to 0.2% magnesium;
0 to 0.1% boron;
0 to 0.5% carbon;
0 to 1% rare earth elements;
0.05% to 0.5% aluminum;
0.1% to 0.5% manganese;
impurities; and
nickel.
12. The nickel-base alloy of claim 1 , consisting of, in weight percent based on total weight of the nickel-base alloy:
14.5% to 17.5% molybdenum;
5% to 8% tungsten;
7% to 9% chromium;
3% to 5.5% vanadium;
0 to 2% to niobium;
0 to 1.5% iron;
0 to 2% titanium;
0 to 10% cobalt;
0 to 3% tantalum;
0.01% to 0.5% silicon;
0 to 2% copper;
0 to 1% rhenium;
0 to 0.5% hafnium;
0 to 0.5% zirconium;
0 to 0.2% magnesium;
0 to 0.1% boron;
0 to 0.5% carbon;
0 to 1% rare earth elements;
0 to 1% aluminum;
0 to 2% manganese;
impurities; and
nickel.
13. The nickel-base alloy of claim 1 , consisting of, in weight percent based on total weight of the nickel-base alloy:
13.5% to 16.5% molybdenum;
5% to 8% tungsten;
7% to 9% chromium;
3% to 5.5% vanadium;
0 to 2% to niobium;
0 to 1.5% iron;
0 to 2% titanium;
0 to 10% cobalt;
0 to 3% tantalum;
0.01% to 0.5% silicon;
0 to 2% copper;
0 to 1% rhenium;
0 to 0.5% hafnium;
0 to 0.5% zirconium;
0 to 0.2% magnesium;
0 to 0.1% boron;
0 to 0.5% carbon;
0 to 1% rare earth elements;
0 to 1% aluminum;
0 to 2% manganese;
impurities; and
nickel;
wherein a mean coefficient of linear thermal expansion from 70° F. (21° C.) to 1500° F. (816° C.) is no greater than 8 μin/in-° F.; and
wherein a yield strength at 1500° F. (816° C.) is at least 60 ksi (414 MPa).
14. The nickel-base alloy of claim 1 , consisting of, in weight percent based on total weight of the nickel-base alloy:
13.5% to 16.5% molybdenum;
5.5% to 7.5% tungsten;
7% to 8.5% chromium;
3.75% to 5.5% vanadium;
0 to 2% to niobium;
0.5% to 1.5% iron;
0 to 2% titanium;
0 to 10% cobalt;
0 to 2% tantalum;
0.01% to 0.5% silicon;
0 to 0.5% copper;
0 to 0.5% rhenium;
0 to 0.5% hafnium;
0 to 0.5% zirconium;
0 to 0.2% magnesium;
0 to 0.1% boron;
0 to 0.5% carbon;
0 to 1% rare earth elements;
0.05% to 0.5% aluminum;
0.1% to 0.5% manganese;
impurities; and
nickel.
15. The nickel-base alloy of claim 1 , wherein the molybdenum and tungsten content in the nickel-base alloy satisfy the following equations:
18
<
Cr
e
q
<
33
;
and
Mo
e
q
/
Cr
eq
>
1.8
,
wherein
:
Cr
e
q
=
{
[
Cr
]
+
0
.54
[
Mo
]
+
0
.
2
8
[
W
]
+
1.02
[
V
]
+
0
.55
[
Nb
]
+
1.09
[
Ti
]
+
0
.29
[
Ta
]
}
Mo
e
q
=
{
[
Mo
]
+
1.06
[
W
]
+
6.61
[
V
]
+
4
.14
[
Nb
]
+
1
4
.07
[
Ti
]
+
4.26
[
Ta
]
}
.
16. The nickel-base alloy of claim 1 , wherein a weight ratio of chromium to vanadium is 0.8 to 5.
17. The nickel-base alloy of claim 1 , wherein a weight ratio of chromium to vanadium is 1.5 to 2.5.
18. The nickel-base alloy of claim 1 , wherein a mean coefficient of linear thermal expansion from 70° F. (21° C.) to 1400° F. (760° C.) is no greater than 9 μin/in-° F.
19. The nickel-base alloy of claim 1 , wherein a mean coefficient of linear thermal expansion from 70° F. (21° C.) to 1400° F. (760° C.) is no greater than 8 μin/in-° F.
20. The nickel-base alloy of claim 1 , wherein:
a mean coefficient of linear thermal expansion from 70° F. (21° C.) to 1400° F. (760° C.) is no greater than 8 μin/in-° F.;
a yield strength at 1400° F. (760° C.) is at least 60 ksi (414 MPa); and
a yield strength at 1500° F. (816° C.) is at least 35 ksi (241 MPa).
21. A nickel-base alloy comprising, in weight percent based on total weight of the nickel-base alloy:
13% to 16% molybdenum;
8.5% to 12% tungsten;
6% to 8% chromium;
4% to 5% vanadium;
0 to 0.3% niobium;
0 to 3% iron; and
nickel.
22. A nickel-base alloy comprising, in weight percent based on total weight of the nickel-base alloy:
14% to 18% molybdenum;
7.5% to 10.5% tungsten;
6% to 8% chromium;
3.5% to 5.5% vanadium;
0 to 0.3% niobium;
0 to 3% iron; and
nickel.
23. A nickel-base alloy comprising, in weight percent based on total weight of the nickel-base alloy:
14% to 20% molybdenum;
7.5% to 12% tungsten;
6% to 10% chromium;
3.5% to 10% vanadium;
0 to 2% niobium;
0 to 10% iron; and
nickel.