US2025369078A1PendingUtilityA1
Nickel-base alloys
Est. expiryJul 9, 2041(~15 yrs left)· nominal 20-yr term from priority
Inventors:Joseph A. Jankowski
C22C 19/055C22C 19/056
79
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
A nickel-base alloy comprises, in weight percentages based on the total weight of the nickel-base alloy: 1.6% to 3.0% aluminum; 0.3% to 1.5% titanium; 1.5% to 4% tantalum; and nickel.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A nickel-base alloy comprising, in weight percentages based on total weight of the nickel-base alloy:
1.6% to 2.7% aluminum; 0.3% to 1.3% titanium; 1.8% to 4% tantalum; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 7% to 15% cobalt; 18% to 21% chromium; 0 to less than 0.5% niobium; greater than 0 to 2% manganese; greater than 0 to 0.5% silicon; 0 to 0.05% boron; and nickel; wherein the nickel-base alloy exhibits a stress rupture life greater than 100 hours when tested at 1500° F. (816° C.) under stress of 35 ksi (241.3 MPa).
2 . The nickel-base alloy of claim 1 , comprising 1.7% to 2.7% aluminum, in weight percentages based on total weight of the nickel-base alloy.
3 . The nickel-base alloy of claim 1 , comprising 1.8% to 3% tantalum, in weight percentages based on total weight of the nickel-base alloy.
4 . The nickel-base alloy of claim 1 , comprising 2.2% to 2.9% tantalum, in weight percentages based on total weight of the nickel-base alloy.
5 . The nickel-base alloy of claim 1 , comprising, in weight percentages based on total weight of the nickel-base alloy:
1.6% to 2.7% aluminum; 0.3% to 1.3% titanium; 1.8% to 4% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; 0 to 0.5% carbon; 0 to 0.05% boron; 0 to 5% iron; greater than 0 to 2% manganese; 0 to 2% vanadium; 0 to 2% copper; greater than 0 to 0.5% silicon; 0 to 1% zirconium; 0 to 1% hafnium; 0 to 1% rhenium; a total of 0 to 1% of rare earth elements; nickel; and impurities.
6 . The nickel-base alloy of claim 1 , comprising, in weight percentages based on total weight of the nickel-base alloy:
1.6% to 2.7% aluminum; 0.3% to 1.3% titanium; 1.8% to 3% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; greater than 0 to 2% manganese; greater than 0 to 0.5% silicon; 0 to 0.2% carbon; 0 to 0.05% boron; 0 to 3% iron; 0 to 2% manganese; 0 to 2% vanadium; 0 to 2% copper; 0 to 1% silicon; 0 to 1% zirconium; 0 to 1% hafnium; 0 to 1% rhenium; a total of 0 to 1% of rare earth elements; nickel; and impurities.
7 . The nickel-base alloy of claim 1 , comprising, in weight percentages based on total weight of the nickel-base alloy:
1.7% to 2.4% aluminum; 0.3% to 1.3% titanium; 1.8% to 2.9% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; greater than 0 to 2% manganese; greater than 0 to 0.5% silicon; 0 to 0.05% boron; nickel; and impurities.
8 . The nickel-base alloy of claim 1 , comprising, in weight percentages based on total weight of the nickel-base alloy:
1.7% to 2.4% aluminum; 0.3% to 1.3% titanium; 1.8% to 2.9% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; 0 to 0.2% carbon; 0 to 0.05% boron; 0 to 1.5% iron; greater than 0 to 2% manganese; 0 to 2% vanadium; 0 to 2% copper; greater than 0 to 0.5% silicon; 0 to 1% zirconium; 0 to 1% hafnium; 0 to 1% rhenium; a total of 0 to 1% of rare earth elements; nickel; and impurities.
9 . The nickel-base alloy of claim 1 , provided that a composition of the nickel-base alloy satisfies the following equation, in weight percentage concentrations based on total weight of the nickel-base alloy:
2.5
<
{
[
Al
]
+
0
.56
×
[
Ti
]
+
0
.29
×
[
Nb
]
+
0
.15
×
[
Ta
]
}
<
3
.
4
.
10 . The nickel-base alloy of claim 1 , provided that a composition of the nickel-base alloy satisfies the following equation, in weight percentage concentrations based on total weight of the nickel-base alloy:
5
%
<
{
[
Mo
]
+
0.52
×
[
W
]
}
<
10
%
.
11 . The nickel-base alloy of claim 1 , provided that a composition of the nickel-base alloy satisfies the following equation, in weight percentage concentrations based on total weight of the nickel-base alloy:
0.8
%
<
{
[
Nb
]
+
0.51
×
[
Ta
]
}
≤
2.4
%
.
12 . A nickel-base alloy comprising, in weight percentages based on total weight of the nickel-base alloy:
1.6% to 2.7% aluminum; 0.3% to 1.3% titanium; 1.8% to 4% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; 0 to 0.5% carbon; 0 to 0.05% boron; 0 to 5% iron; greater than 0 to 2% manganese; 0 to 2% vanadium; 0 to 2% copper; greater than 0 to 0.5% silicon; 0 to 1% zirconium; 0 to 1% hafnium; 0 to 1% rhenium; a total of 0 to 1% of rare earth elements; and nickel; wherein the nickel-base alloy exhibits a stress rupture life greater than 100 hours when tested at 1500° F. (816°° C.) under stress of 35 ksi (241.3 MPa); provided that a composition of the nickel-base alloy satisfies the following equations:
2.5
<
{
[
Al
]
+
0
.56
×
[
Ti
]
+
0
.29
×
[
Nb
]
+
0
.15
×
[
Ta
]
}
<
3.4
5
<
{
[
Mo
]
+
0
.52
×
[
W
]
}
<
10
0.8
≤
{
[
Nb
]
+
0.51
×
[
Ta
]
}
≤
2
.
4
.
13 . The nickel-base alloy of claim 12 , comprising, in weight percentages based on total weight of the nickel-base alloy:
1.7% to 2.4% aluminum; 0.3% to 1.3% titanium; 1.8% to 2.9% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; 0 to 0.2% carbon; 0 to 0.05% boron; 0 to 1.5% iron; greater than 0 to 2% manganese; 0 to 2% vanadium; 0 to 2% copper; greater than 0 to 0.5% silicon; 0 to 1% zirconium; 0 to 1% hafnium; 0 to 1% rhenium; a total of 0 to 1% of rare earth elements; and nickel.
14 . The nickel-base alloy of claim 13 , provided that a composition of the nickel-base alloy satisfies the following:
2.6
<
{
[
Al
]
+
0
.56
×
[
Ti
]
+
0
.29
×
[
Nb
]
+
0
.15
×
[
Ta
]
}
<
3.3
6
<
{
[
Mo
]
+
0
.52
×
[
W
]
}
<
10
0.8
≤
{
[
Nb
]
+
0.51
×
[
Ta
]
}
≤
1.7
.
15 . A nickel-base alloy consisting of, in weight percentages based on total weight of the nickel-base alloy:
1.6% to 2.7% aluminum; 0.3% to 1.3% titanium; 1.8% to 4% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; 0 to 0.5% carbon; 0 to 0.05% boron; 0 to 5% iron; greater than 0 to 2% manganese; 0 to 2% vanadium; 0 to 2% copper; greater than 0 to 0.5% silicon; 0 to 1% zirconium; 0 to 1% hafnium; 0 to 1% rhenium; a total of 0 to 1% of rare earth elements; nickel; and impurities; wherein the nickel-base alloy exhibits a stress rupture life greater than 100 hours when tested at 1500° F. (816° C.) under stress of 35 ksi (241.3 MPa).
16 . The nickel-base alloy of claim 15 , provided that a composition of the nickel-base alloy satisfies the following:
2.5
<
{
[
Al
]
+
0
.56
×
[
Ti
]
+
0
.29
×
[
Nb
]
+
0
.15
×
[
Ta
]
}
<
3.4
5
<
{
[
Mo
]
+
0
.52
×
[
W
]
}
<
10
0.8
≤
{
[
Nb
]
+
0.51
×
[
Ta
]
}
≤
2.4
.
17 . The nickel-base alloy of claim 15 , wherein a tantalum content is 1.8% to 3%, in weight percentages based on total weight of the nickel-base alloy.
18 . The nickel-base alloy of claim 15 , consisting of, in weight percentages based on total weight of the nickel-base alloy:
1.6% to 2.5% aluminum; 0.3% to 1.3% titanium; 1.8% to 3% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; 0 to 0.2% carbon; 0 to 0.05% boron; 0 to 3% iron; greater than 0 to 2% manganese; 0 to 2% vanadium; 0 to 2% copper; greater than 0 to 0.5% silicon; 0 to 1% zirconium; 0 to 1% hafnium; 0 to 1% rhenium; a total of 0 to 1% of rare earth elements; nickel; and impurities.
19 . The nickel-base alloy of claim 18 , provided that a composition of the nickel-base alloy satisfies the following:
2.6
<
{
[
Al
]
+
0
.56
×
[
Ti
]
+
0
.29
×
[
Nb
]
+
0
.15
×
[
Ta
]
}
<
3.3
6
<
{
[
Mo
]
+
0
.52
×
[
W
]
}
<
10
0.8
≤
{
[
Nb
]
+
0.51
×
[
Ta
]
}
≤
1.7
.
20 . The nickel-base alloy of claim 15 , consisting of, in weight percentages based on total weight of the nickel-base alloy:
1.7% to 2.4% aluminum; 0.3% to 1.3% titanium; 1.8% to 2.9% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; greater than 0 to less than 0.5% tungsten; 0 to less than 0.5% niobium; 0 to 0.2% carbon; 0 to 0.05% boron; 0 to 1.5% iron; greater than 0 to 2% manganese; 0 to 2% vanadium; 0 to 2% copper; greater than 0 to 0.5% silicon; 0 to 1% zirconium; 0 to 1% hafnium; 0 to 1% rhenium; a total of 0 to 1% of rare earth elements; nickel; and impurities.
21 . The nickel-base alloy of claim 20 , provided that a composition of the nickel-base alloy satisfies the following:
2.7
<
{
[
Al
]
+
0
.56
×
[
Ti
]
+
0
.29
×
[
Nb
]
+
0
.15
×
[
Ta
]
}
<
3.3
6
<
{
[
Mo
]
+
0
.52
×
[
W
]
}
<
9.5
0.8
≤
{
[
Nb
]
+
0.51
×
[
Ta
]
}
≤
1.5
.
22 . An article of manufacture comprising a nickel-base alloy comprising:
1.6% to 2.7% aluminum; 0.3% to 1.3% titanium; 1.8% to 4% tantalum; 18% to 21% chromium; 7% to 15% cobalt; greater than 6% to 9.5% molybdenum; 0 to less than 0.5% niobium; greater than 0 to 2% manganese; greater than 0 to 0.5% silicon; greater than 0 to less than 0.5% tungsten; 0 to 0.05% boron; nickel; and impurities; wherein the nickel-base alloy exhibits a stress rupture life greater than 100 hours when tested at 1500° F. (816° C.) under stress of 35 ksi (241.3 MPa).
23 . The article of manufacture of claim 22 , selected from the group consisting of foil, a sheet, a plate, a wire, a billet, a slab, a casting, a powder, a heat exchanger, a gas turbine transition duct, and an additively manufactured part.
24 . The nickel-base alloy of claim 1 , wherein the nickel-base alloy exhibits a stress rupture life greater than 140 hours when tested at 1500° F. (816° C.) under stress of 35 ksi (241.3 MPa).
25 . The nickel-base alloy of claim 12 , wherein the nickel-base alloy exhibits a stress rupture life greater than 140 hours when tested at 1500° F. (816° C.) under stress of 35 ksi (241.3 MPa).
26 . The nickel-base alloy of claim 18 , wherein the nickel-base alloy exhibits a stress rupture life greater than 140 hours when tested at 1500° F. (816° C.) under stress of 35 ksi (241.3 MPa).
27 . The article of manufacture of claim 22 , wherein the nickel-base alloy exhibits a stress rupture life greater than 140 hours when tested at 1500° F. (816° C.) under stress of 35 ksi (241.3 MPa).Cited by (0)
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