Patent US4534938A successfully refreshed from Google Patents.
US4534938A
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Method for making alloy additions to base metals having higher melting points
Assignee: United States, UNITED STATES AIR FORCE, Secretary of
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Filing: 1984-08-15
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Granted: 1985-08-13
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Expires: 2004-08-15
Abstract
Abstract A method for adding alloying elements having relatively low boiling points to base metal shaving relatively high melting points. The base metal is combined with the melting point-lowering metal; or metalloid and to this mixture is added the desired alloying metal or metals. No special equipment is required for this method.
Inventors
- 👤 Howard B. Bomberger
- 👤 Francis H. Froes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:25
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/03
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
112 words
A method for alloying at least one first metal having a density less than 7.2 g/cc and a melting point below 900° C. with a base metal having a density greater than 1.8 g/cc and a melting point greater 1000° C., said base metal comprising one or more metals selected from the group consisting of Ti, Zr, Nb, Ta, Cr and W, which comprises forming a composition of said base metal with a melting point lowering amount of a melting point-lowering element, whereby the resulting composition has a melting point below the boiling point of said first metal, melting said composition and mixing said first element therewith, and solidifying the resulting alloy.
Claim 2
Independent Claim
112 words
A method for alloying at least one first metal having a density less than 7.2 g/cc and a melting point below 900° C. with a base metal having a density greater than 1.8 g/cc and a melting point greater 1000° C., said base metal comprising one or more metals selected from the group consisting of Ti, Zr, Nb, Ta, Cr and W, which comprises forming a composition of said base metal with a melting point lowering amount of a melting point-lowering element, whereby the resulting composition has a melting point below the boiling point of said first metal, melting said composition and mixing said first element therewith, and solidifying the resulting alloy.
Claim 3
Dependent Claim
41 words
The method of claim 1, wherein said melting point-lowering element is selected from the group consisting of Cu, Ni, Co, Fe, Si and Be and said first metal is selected from the group consisting of Ba, Ca, Li, Mg and Zn.
Claim 4
Dependent Claim
11 words
The method of claim 2 wherein said base metal is Ti.
Claim 5
Dependent Claim
13 words
The method of claim 3 wherein said melting point lowering element is Be.
Claim 6
Dependent Claim
11 words
The method of claim 4 wherein said first metal is Li.
Claim 7
Dependent Claim
11 words
The method of claim 4 wherein said first metal is Mg.
Claim 8
Dependent Claim
19 words
The method of claim 3 wherein said melting point lowering element is Cu and said first metal is Li.
Claim 9
Dependent Claim
30 words
The method of claim 2 wherein said base metal is a mixture of Ti and Zr, wherein said melting point lowering element is Be and said first metal is Li.
Claim 10
Dependent Claim
43 words
The method of claim 1 wherein the amount of said melting point lowering element is in the approximate range of 3 to 50 weight percent and the amount of said first metal is in the approximate range of 0.5 to 15 weight percent.
Claim 11
Dependent Claim
43 words
The method of claim 1 wherein the amount of said melting point lowering element is in the approximate range of 3 to 10 weight percent and the amount of said first metal is in the approximate range of 3 to 7 weight percent.
Claim 12
Dependent Claim
5 words
The composition of matter Ti-4.5Be-3Li.
Claim 13
Dependent Claim
5 words
The composition of matter Ti-4.5Be-3Li.
Claim 14
Dependent Claim
5 words
The composition of matter Ti-7.5Be-3Li.
Claim 15
Dependent Claim
5 words
The composition of matter Ti-7.5Be-3Li.
Claim 16
Dependent Claim
5 words
The composition of matter Ti-7.5Be-5Mg.
Claim 17
Dependent Claim
5 words
The composition of matter Ti-7.5Be-5Mg.
Claim 18
Dependent Claim
5 words
The composition of matter Ti-50Cu-3Li.
Claim 19
Dependent Claim
5 words
The composition of matter Ti-50Cu-3Li.
Claim 20
Dependent Claim
5 words
The composition of matter Ti-47.5Zr-5Be-3Li.
Claim 21
Dependent Claim
5 words
The composition of matter Ti-47.5Zr-5Be-3Li.
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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) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |