US4461741A
Expired / Lapsed
US
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Chromium and cobalt free nickel base superalloy powder
Assignee: Honeywell International Inc
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Filing: 1981-12-30
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Granted: 1984-07-24
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Expires: 2001-12-30
Abstract
Abstract Rapidly solidified chromium and cobalt free superalloy powders are described. The compositions of the alloys are as follows: Ni.sub.Bal Al.sub.a Ti.sub.b Nb.sub.c Hf.sub.d Mo.sub.e Zr.sub.f B.sub.g where the subscripts of the elemental additions are atomic percents and have the following values; a=10-15 b=3-10 c=0-4 d=0-4 e=0-4 f=0-1 g=2-5 These alloys maintain their strength at temperatures in excess of 800° C. and show excellent oxidation resistance.
Inventors
- 👤 Kenji Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:58
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
52 words
A superalloy which is solidified at rates greater than about 10 5 ° C./sec. having a composition consisting essentially of the formula: Ni.sub.Bal Al.sub.a Ti.sub.b Nb.sub.c Hf.sub.d Mo.sub.e Zr.sub.f B.sub.g Where: the subscripts are the elemental additions in atomic percent and have the following values: a=10-15 b=3-10 c=0-4 d=0-4 e=0-4 f=0-1 g=2-5
Claim 2
Dependent Claim
52 words
A superalloy which is solidified at rates greater than about 10 5 ° C./sec. having a composition consisting essentially of the formula: Ni.sub.Bal Al.sub.a Ti.sub.b Nb.sub.c Hf.sub.d Mo.sub.e Zr.sub.f B.sub.g Where: the subscripts are the elemental additions in atomic percent and have the following values: a=10-15 b=3-10 c=0-4 d=0-4 e=0-4 f=0-1 g=2-5
Claim 3
Dependent Claim
33 words
The superalloy of claim 1 wherein the boron addition is between 3 and 5 atomic percent, and the sum of the additions of Nb, Hf and Zr is at least 2 atomic percent.
Claim 4
Dependent Claim
10 words
The superalloy of claim 1 or 2 in powder form.
Claim 5
Dependent Claim
10 words
The superalloy of claim 1 or 2 in consolidated form.
References Cited (Backward Citations)
US4297135A
Cited
US4359352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |