US3869284A
Expired / Lapsed
US
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High temperature alloys
Assignee: FRENCH BALDWIN J
•
Filing: 1973-04-02
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Granted: 1975-03-04
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Expires: 1993-04-02
Abstract
Abstract Nickel base superalloys in which critical amounts of boron are employed to enhance creep-rupture strength and ductility in the 1,300* F-1,800* F. temperature range. Creep-rupture strength and ductility at temperatures around 1,800* F. also is enhanced by employing amounts of carbon below a critical upper limit. These alloys are particularly useful in the form of castings as gas turbine engine components.
Inventors
- 👤 James French Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:32
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
23 words
A NICKLE BASE ALLOY FOR USE AT RELATIVELY HIGH TEMPERATURES CONSISTING ESSENTIALLY OF THE FOLLOWING ELEMENTS IN THE WEIGHT PERCENT RANGES SET FORTH:
Claim 2
Dependent Claim
23 words
A NICKLE BASE ALLOY FOR USE AT RELATIVELY HIGH TEMPERATURES CONSISTING ESSENTIALLY OF THE FOLLOWING ELEMENTS IN THE WEIGHT PERCENT RANGES SET FORTH:
Claim 3
Dependent Claim
18 words
The nickel base alloy of claim 1 wherein the carbon content is no more than 0.025% by weight.
Claim 4
Dependent Claim
18 words
The nickel base alloy of claim 1 wherein the boron content is about 0.075% to 0.2% by weight.
Claim 5
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 1.
Claim 6
Dependent Claim
13 words
The component of claim 4 in which said component is a turbine blade.
Claim 7
Dependent Claim
12 words
The component of claim 4 in which said component is a disk.
Claim 8
Dependent Claim
19 words
The component of claim 4 in which said component is an integral wheel comprising a disk and turbine blade.
Claim 9
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 3.
Claim 10
Dependent Claim
12 words
The component of claim 8 wherein said component is a turbine blade.
Claim 11
Dependent Claim
11 words
The component of claim 8 wherein said component is a disk.
Claim 12
Dependent Claim
18 words
The component of claim 8 wherein said component is an integral wheel comprising a disk and turbine blade.
Claim 13
Dependent Claim
31 words
A shaped object of the alloy of claim 1 capable of withstanding an applied stress of 94,000 psi at 1,400* F. without rupture for a time in excess of 120 hours.
Claim 14
Dependent Claim
31 words
A shaped object of the alloy of claim 1 capable of withstanding an applied stress of 29,000 psi at 1,800* F. without rupture for a time in excess of 40 hours.
Claim 15
Dependent Claim
43 words
The alloy of claim 1 which contains, on a weight basis, about 6.0% to about 17% chromium, about 2% to about 8% aluminum, about 0.75% to about 3% titanium, about 2% to about 17% cobalt, and about 40% to 80% by weight nickel.
Claim 16
Dependent Claim
18 words
The nickel base alloy of claim 14 wherein the carbon content is no more than 0.025% by weight.
Claim 17
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 14.
Claim 18
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 15.
Claim 19
Dependent Claim
42 words
The alloy of claim 1 which contains, on a weight basis, about 5% to 12% chromium, about 4% to about 8% aluminum, about 0.75% to about 2.5% titanium, about 5% to about 15.5% cobalt, and about 40% to 80% by weight nickel.
Claim 20
Dependent Claim
18 words
The nickel base alloy of claim 18 wherein the carbon content is no more than 0.025 by weight.
Claim 21
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 18.
Claim 22
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 19.
Claim 23
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 24
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 25
Dependent Claim
19 words
The nickel base alloy of claim 22 wherein the boron content is about 0.07% to about 0.25% by weight.
Claim 26
Dependent Claim
18 words
The nickel base alloy of claim 22 wherein the carbon content is no more than 0.025 by weight.
Claim 27
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 22.
Claim 28
Dependent Claim
16 words
A cast component for use in gas turbine engine formed of the alloy of claim 24.
Claim 29
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 30
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 31
Dependent Claim
19 words
The nickel base alloy of claim 27 wherein the boron content is about 0.07% to about 0.25% by weight.
Claim 32
Dependent Claim
18 words
The nickel base alloy of claim 27 wherein the carbon content is no more than 0.025% by weight.
Claim 33
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 27.
Claim 34
Dependent Claim
13 words
The component of claim 30 in which said component is a turbine blade.
Claim 35
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 29.
Claim 36
Dependent Claim
12 words
The component of claim 32 wherein said component is a turbine blade.
Claim 37
Dependent Claim
31 words
A shaped object of the alloy of claim 27 capable of withstanding an applied stress of 94,000 psi at 1,400* F. without rupture for a time in excess of 120 hours.
Claim 38
Dependent Claim
31 words
A shaped object of the alloy of claim 29 capable of withstanding an applied stress of 29,000 psi at 1,800* F. without rupture for a time in excess of 40 hours.
Claim 39
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 40
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 41
Dependent Claim
19 words
The nickel base alloy of claim 36 wherein the boron content is about 0.07% to about 0.25% by weight.
Claim 42
Dependent Claim
18 words
The nickel base alloy of claim 36 wherein the carbon content is no more than 0.025% by weight.
Claim 43
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 36.
Claim 44
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 38.
Claim 45
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 46
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 47
Dependent Claim
19 words
The nickel base alloy of claim 41 wherein the boron content is abOut 0.07% to about 0.25% by weight.
Claim 48
Dependent Claim
18 words
The nickel base alloy of claim 41 wherein the carbon content is no more than 0.025% by weight.
Claim 49
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 41.
Claim 50
Dependent Claim
13 words
The component of claim 44 in which said component is a turbine blade.
Claim 51
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 43.
Claim 52
Dependent Claim
12 words
The component of claim 46 wherein said component is a turbine blade.
Claim 53
Dependent Claim
31 words
A shaped object of the alloy of claim 41 capable of withstanding an applied stress of 94,000 psi at 1,400* F. without rupture for a time in excess of 120 hours.
Claim 54
Dependent Claim
31 words
A shaped object of the alloy of claim 43 capable of withstanding an applied stress of 29,000 psi at 1,800* F. without rupture for a time in excess of 40 hours.
Claim 55
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 56
Dependent Claim
23 words
A nickel base alloy for use at relatively high temperatures consisting essentially of the following elements in the weight percent ranges set forth:
Claim 57
Dependent Claim
19 words
The nickel base alloy of claim 50 wherein the boron content is about 0.07% to about 0.25% by weight.
Claim 58
Dependent Claim
18 words
The nickel base alloy of claim 51 wherein the carbon content is no more than 0.025% by weight.
Claim 59
Dependent Claim
17 words
A cast component for use in a gas turbine engine formed of the alloy of claim 50.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |