US4409296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapidly cast alloy strip having dissimilar portions
Assignee: Allegheny Ludlum Corp
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Filing: 1980-10-22
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Granted: 1983-10-11
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Expires: 2000-10-22
Abstract
Abstract A rapidly quenced, cast metallic strip is disclosed comprising a plurality of dissimilar portions, each portion metallurgically alloy-bonded during casting to adjacent portions along the longitudinal extent of the strip. In the method and apparatus for producing such strip a stream of molten metal is delivered onto a casting surface from a first crucible and at least one additional dissimilar stream of molten metal is delivered onto the casting surface such that a peripheral edge of the dissimilar stream contacts a peripheral edge portion of adjacent dissimilar metal to create a metallurgical alloy-bond therebetween during casting.
Inventors
- 👤 Brian L. Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:26
CPC Classifications
C; C22; C22C; C22C45/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12931; Y10T428/12951; Y10T428/12972; Y10T428/12979
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
105 words
A rapidly quenched, thin cast metallic strip having an upper face and a lower face; said strip comprising a plurality of rapidly quenched, cast metallic dissimilar portions of at least two different compositions cast edge-to-edge, each portion having contacted a casting surface and metallurgically alloy-bonded during casting to an adjacent portions along the edges of said dissimilar portions of said strip; said strip having the metallurgical bond formed at a transition zone between portions having a width of less than five times the average thickness of the bonded portions and extending through the strip thickness from one face to the other face of the strip.
Claim 2
Dependent Claim
105 words
A rapidly quenched, thin cast metallic strip having an upper face and a lower face; said strip comprising a plurality of rapidly quenched, cast metallic dissimilar portions of at least two different compositions cast edge-to-edge, each portion having contacted a casting surface and metallurgically alloy-bonded during casting to an adjacent portions along the edges of said dissimilar portions of said strip; said strip having the metallurgical bond formed at a transition zone between portions having a width of less than five times the average thickness of the bonded portions and extending through the strip thickness from one face to the other face of the strip.
Claim 3
Dependent Claim
21 words
A strip as set forth in claim 1 wherein at least two adjacent portions of said strip have dissimilar atomic arrangement.
Claim 4
Dependent Claim
19 words
A strip as set forth in claim 2 wherein at least one dissimilar portion of said strip is amorphous.
Claim 5
Dependent Claim
19 words
A strip as set forth in claim 2 wherein at least one dissimilar portion of said strip is crystalline.
Claim 6
Dependent Claim
32 words
A strip as set forth in claim 1 wherein the metallurgical alloy-bond is formed at a transition zone which is amorphous and wherein the dissimilar portions adjacent said transition zone are crystalline.
Claim 7
Dependent Claim
28 words
A strip as set forth in claim 1 wherein adjacent dissimilar portions are amorphous and the metallurgical alloy-bond is formed at a transition zone therebetween which is crystalline.
Claim 8
Dependent Claim
20 words
A strip as set forth in claim 1 wherein at least one dissimilar portion of said strip is stainless steel.
Claim 9
Dependent Claim
20 words
A strip as set forth in claim 1 wherein at least two adjacent portions of said strip have dissimilar thicknesses.
Claim 10
Dependent Claim
22 words
A strip as set forth in claim 1 wherein at least two adjacent portions of said strip have dissimilar corrosion resistant properties.
Claim 11
Dependent Claim
21 words
A strip as set forth in claim 1 wherein at least two adjacent portions of said strip have dissimilar electrical properties.
Claim 12
Dependent Claim
21 words
A strip as set forth in claim 1 wherein at least two adjacent portions of said strip have dissimilar expansion characteristics.
Claim 13
Dependent Claim
55 words
A strip as set forth in claim 1 wherein at least one portion comprises an alloy having major constituents selected from the group consisting of iron, nickel and cobalt and mixtures thereof and minor constituents selected from the group consisting of silicon, boron, phosphorous, carbon, aluminum, vanadium, beryllium, chromium and mixtures thereof, with incidental impurities.
Claim 14
Dependent Claim
34 words
A strip as set forth in claim 1 wherein at least one portion is at least 50% amorphous and has a composition of Fe 80-85 Si 3-7 B 10-15 , based on atomic percentages.
Claim 15
Dependent Claim
34 words
A strip as set forth in claim 1 wherein at least one portion is at least 50% amorphous and has a composition of Fe 36-43 Ni 36-43 B 17-22 , based on atomic percentages.
Claim 16
Dependent Claim
34 words
A strip as set forth in claim 1 wherein at least one portion is at least 50% amorphous and has a composition of Fe 80 B 12 Si 8 , based on atomic percentages.
Claim 17
Dependent Claim
34 words
A strip as set forth in claim 1 wherein at least one portion is at least 50% amorphous and has a composition of Fe 79 B 15 Si 6 , based on atomic percentages.
Claim 18
Dependent Claim
36 words
A strip as set forth in claim 1 wherein at least one portion is at least 50% amorphous and has a composition of Fe 81 B 13 Si 5 C 1 , based on atomic percentages.
Claim 19
Dependent Claim
34 words
A strip as set forth in claim 1 wherein at least one portion is at least 50% amorphous and has a composition of Fe 84 B 15 Si 1 , based on atomic percentages.
Claim 20
Dependent Claim
29 words
A strip as set forth in claim 1 wherein the metallurgical bond is formed at a transition zone between portions having a width of less than about 1.5 mm.
Claim 21
Dependent Claim
29 words
A strip as set forth in claim 1 wherein the metallurgical bond is formed at a transition zone having mechanical strength greater than that of both adjacent bonded portions.
Claim 22
Dependent Claim
29 words
A strip as set forth in claim 1 wherein the metallurgical alloy-bond is formed at a transition zone having lower mechanical strength than that of both adjacent bonded portions.
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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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |