Patent US4606888A successfully refreshed from Google Patents.
US4606888A
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Inhibition of grain growth in Ni3 Al base alloys
Assignee: General Electric Co
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Filing: 1984-09-04
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Granted: 1986-08-19
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Expires: 2004-09-04
Abstract
Abstract Inhibition of grain size growth in a tri-nickel aluminide is achieved by additions of minor amounts of a metal selected from the group comprising rhenium and molybdenum.
Inventors
- 👤 Shyh-Chin Huang
- 👤 Keh-Minn Chang
- 👤 Alan I. Taub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:10
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/007
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
39 words
The method of inhibiting the grain growth of a rapidly solidified boron containing Ni 3 Al type composition which comprises incorporating in the composition a small quantity of a metal selected from the group consisting of rhenium and molybdenum.
Claim 2
Independent Claim
39 words
The method of inhibiting the grain growth of a rapidly solidified boron containing Ni 3 Al type composition which comprises incorporating in the composition a small quantity of a metal selected from the group consisting of rhenium and molybdenum.
Claim 3
Independent Claim
36 words
The method of inhibiting grain growth of a composition comprising (Ni.sub.0.76 Al.sub.0.24-a X.sub.a).sub.89.75 Fe.sub.10 B.sub.0.25 which comprises adding to the composition a small quantity of material, X, selected from the group consisting of rhenium and molybdenum.
Claim 4
Independent Claim
36 words
The method of inhibiting grain growth of a composition comprising (Ni.sub.0.76 Al.sub.0.24-a X.sub.a).sub.89.75 Fe.sub.10 B.sub.0.25 which comprises adding to the composition a small quantity of material, X, selected from the group consisting of rhenium and molybdenum.
Claim 5
Dependent Claim
10 words
The method of claim 2 in which X is rhenium.
Claim 6
Dependent Claim
10 words
The method of claim 2 in which X is molybdenum.
Claim 7
Dependent Claim
17 words
The method of claim 2 in which the quantity of additive, a, is from 0.1 to 0.2.
Claim 8
Dependent Claim
10 words
The method of claim 5 in which X is rhenium.
Claim 9
Dependent Claim
10 words
The method of claim 5 in which X is molybdenum.
Claim 10
Dependent Claim
30 words
As a composition of matter, a fine grain alloy containing the following composition (Ni.sub.0.76 Al.sub.0.24-a X.sub.a).sub.89.75 Fe.sub.10 B.sub.0.25 wherein X is selected from the group consisting of Re and Mo.
Claim 11
Dependent Claim
30 words
As a composition of matter, a fine grain alloy containing the following composition (Ni.sub.0.76 Al.sub.0.24-a X.sub.a).sub.89.75 Fe.sub.10 B.sub.0.25 wherein X is selected from the group consisting of Re and Mo.
Claim 12
Dependent Claim
12 words
The composition of claim 8 in which a is 0.01 to 0.02.
Claim 13
Dependent Claim
10 words
The composition of claim 8 in which x is rhenium.
Claim 14
Dependent Claim
10 words
The composition of claim 8 in which x is molybdenum.
Claim 15
Dependent Claim
41 words
As an article of manufacture a rapidly solidified boron-doped tri-nickel aluminde ribbon, said ribbon having incorporated therein a small quantity of metal selected from the group consisting of rhenium and molybdenum, said quantity being an amount effective to inhibit grain growth.
Claim 16
Dependent Claim
41 words
As an article of manufacture a rapidly solidified boron-doped tri-nickel aluminde ribbon, said ribbon having incorporated therein a small quantity of metal selected from the group consisting of rhenium and molybdenum, said quantity being an amount effective to inhibit grain growth.
Claim 17
Dependent Claim
15 words
The article of claim 12 wherein the tri-nickel aluminide is (Ni.sub.0.76 Al.sub.0.24-a x.sub.a).sub.89.75 Fe.sub.10 B.sub.0.25.
Claim 18
Dependent Claim
9 words
The article of claim 13 wherein x is rhenium.
Claim 19
Dependent Claim
9 words
The article of claim 13 wherein x is molybdenum.
Claim 20
Dependent Claim
12 words
The article of claim 13 wherein a is from 0.1 to 0.2.
Claim 21
Dependent Claim
13 words
The article of claim 13 wherein x is rhenium and a is 0.2.
References Cited (Backward Citations)
US4478791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |