US3922182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy adapted for furnace components
Assignee: Huntington Alloys Corp
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Filing: 1973-01-22
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Granted: 1975-11-25
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Expires: 1993-01-22
Abstract
Abstract A dispersion strengthened nickel-base alloy containing correlated percentages of chromium, yttria, aluminum, titanium and carbon, the alloy being adapted for use in the fabrication of components for high temperature furnaces.
Inventors
- 👤 Howard Francis Merrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:30
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
A COLD WORKED DISPERSION STRENGTHENED MECHANICALLY ALLOYED COMPOSITION SUITABLE FOR USE IN THE FABRICATION OF COMPONENTS FOR HIGH TEMPERATURE FURNACES AND CONSISTING ESSENTIALLY OF FROM ABOUT 12.5 TO 20% CHROMIUM, A SMALL BUT EFFECTIVE AMOUNT OF YTTRIA SUFFICIENT TO ENHANCE THE STRENGTH CHARACTERISTICS OF THE ALLOY, THE UPPER LEVEL BEING UP TO 0.45% BY VOLUME, UP TO 1% ALUMINUM, UP TO 1% TITANIUM, UP TO 1.% CARBON, AND THE BALANCE ESSENTIALLY NICKEL.
Claim 2
Dependent Claim
72 words
A COLD WORKED DISPERSION STRENGTHENED MECHANICALLY ALLOYED COMPOSITION SUITABLE FOR USE IN THE FABRICATION OF COMPONENTS FOR HIGH TEMPERATURE FURNACES AND CONSISTING ESSENTIALLY OF FROM ABOUT 12.5 TO 20% CHROMIUM, A SMALL BUT EFFECTIVE AMOUNT OF YTTRIA SUFFICIENT TO ENHANCE THE STRENGTH CHARACTERISTICS OF THE ALLOY, THE UPPER LEVEL BEING UP TO 0.45% BY VOLUME, UP TO 1% ALUMINUM, UP TO 1% TITANIUM, UP TO 1.% CARBON, AND THE BALANCE ESSENTIALLY NICKEL.
Claim 3
Dependent Claim
110 words
A cold worked, dispersion strengthened mechanically alloyed composition suitable for use in the fabrication of components for high temperature furnaces, said alloy being characterized by a microstructure (i) substantially devoid of fine grains, (ii) in which the grains are coarse and elongated, and (iii) in which the aspect ratio of the grains is at least 5:1, said alloy consisting essentially of about 12.5 to 18% chromium, about 0.175 to about 0.45% yttria, the chromium and yttria being correlated so as to represent a point falling within the area ABCD of the accompanying drawing, up to 1% aluminum, up to 1% titanium, up to 0.1% carbon and the balance essentially nickel.
Claim 4
Dependent Claim
110 words
A cold worked, dispersion strengthened mechanically alloyed composition suitable for use in the fabrication of components for high temperature furnaces, said alloy being characterized by a microstructure (i) substantially devoid of fine grains, (ii) in which the grains are coarse and elongated, and (iii) in which the aspect ratio of the grains is at least 5:1, said alloy consisting essentially of about 12.5 to 18% chromium, about 0.175 to about 0.45% yttria, the chromium and yttria being correlated so as to represent a point falling within the area ABCD of the accompanying drawing, up to 1% aluminum, up to 1% titanium, up to 0.1% carbon and the balance essentially nickel.
Claim 5
Dependent Claim
30 words
An alloy in accordance with claim 2 in which the chromium and yttria are correlated so as to represent a point falling within the area EFGH of the accompanying drawing.
Claim 6
Dependent Claim
30 words
As a new article of manufacture wire mesh belts for use in high temperature furnaces are formed from an alloy having a composition as set forth in claim 1. >
References Cited (Backward Citations)
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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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |