US5130086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fatigue crack resistant nickel base superalloys
Assignee: General Electric Co
•
Filing: 1990-08-01
•
Granted: 1992-07-14
•
Expires: 2010-08-01
Abstract
Abstract The present invention provides an alloy having improved crack growth inhibition and having high strength at high temperatures. The composition of the alloy is essentially as follows: -Concentration in weight % -Ingredient From To -Ni balance -Co 3 13 -Cr 10 16 -Mo 2.5 5.5 -Al 2.5 4.5 -Ti 1.5 3.5 -Ta 2 5 -Nb 2 5 -Zr 0 0.1 -C 0 0.1 -B 0.01 0.05 -W 0 1 -Re 0 3 -Y 0 0.2. -
Inventors
- 👤 Michael F. Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:35
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
78 words
As a composition of matter an alloy having a high strength and having a substantially lower crack propagation rate, said alloy consisting essentially of the following ingredients in the following proportions: ______________________________________
Concentration in Weight %
Claimed Composition
Ingredient From To
______________________________________
Ni balance
Co 3 13
Cr 10 16
Mo 2.5 5.5
Al 2.5 4.5
Ti 1.5 3.5
Ta 2.0 5.0
Nb 2.0 5.0
Zr 0.00 0.10
C 0.0 0.10
B 0.01 0.05
W 0.0 1.0.
______________________________________
Claim 2
Dependent Claim
87 words
As a composition of matter an alloy having a high strength and having a substantially lower crack propagation rate, said alloy consisting essentially of the following ingredients in the following proportions: ______________________________________
Concentration in Weight %
Claimed Composition
Ingredient From To
______________________________________
Ni balance
Co 3 13
Cr 10 16
Mo 2.5 5.5
Al 2.5 4.5
Ti 1.5 3.5
Ta 2.0 5.0
Nb 2.0 5.0
Re 0.0 3.0
Hf 0.0 0.5
Zr 0.00 0.10
C 0.0 0.10
B 0.01 0.05
W 0.0 1.0
Y 0.0 0.2
______________________________________
Claim 3
Dependent Claim
63 words
As a composition of matter an alloy having a high strength and having a substantially lower crack propagation rate, said alloy consisting essentially of the following ingredients in the following proportions: ______________________________________
Concentration in Weight %
Ingredient Claimed Composition
______________________________________
Ni balance
Co 8
Cr 13
Mo 3.5
Al 3.5
Ti 2.5
Ta 3.5
Nb 3.5
Zr 0.06
C 0.05
B 0.03
______________________________________
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-14 | 1996-01-13 | 1996-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-14 | 2000-01-13 | 2000-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-14 | 2004-01-13 | 2004-07-14 | $7700.00 | Window Closed / Lapsed |