US4067732A
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Amorphous alloys which include iron group elements and boron
Assignee: Honeywell International Inc
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Filing: 1975-06-26
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Granted: 1978-01-10
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Expires: 1995-06-26
Abstract
Abstract Iron group-boron base amorphous alloys have improved ultimate tensile strength and hardness and do not embrittle when heat treated at temperatures employed in subsequent processing steps, as compared with prior art amorphous alloys. The alloys have the formula MaM'bCrcM''dBe WHERE M is one iron group element (iron, cobalt or nickel) M' is at least one of the two remaining iron group elements, M'' is at least one element of vanadium, manganese, molybdenum, tungsten, niobium and tantalum, "a" ranges from about 40 to 85 atom percent, "b" ranges from 0 to about 45 atom percent, "c" and "d" both range from 0 to about 20 atom percent and "e" ranges from about 15 to 25 atom percent, with the proviso that "b", "c" and "d" cannot all be zero simultaneously.
Inventors
- 👤 Ranjan Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:26
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/008; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/153; H01F1/15308
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
An amorphous metal alloy that is at least 50% amorphous, has improved ultimate tensile strength and hardness and does not embrittle when heat treated, characterized in that the alloy consists essentially of the composition M a M' b Cr c M" d B e , where M is one element selected from the group consisting of iron, cobalt and nickel, M' is one or two elements selected from the group consisting of iron, cobalt and nickel other than M, M" is at least one element selected from the group consisting of vanadium, manganese, molybdenum, tungsten, niobium and tantalum, "a" ranges from about 40 to 85 atom percent, "b" ranges from 0 to about 45 atom percent, "c" and "d" each range from 0 to about 20 atom percent and "e" ranges from about 15 to 25 atom percent, with the proviso that "b", "c" and "d" cannot all be zero simultaneously.
Claim 2
Dependent Claim
151 words
An amorphous metal alloy that is at least 50% amorphous, has improved ultimate tensile strength and hardness and does not embrittle when heat treated, characterized in that the alloy consists essentially of the composition M a M' b Cr c M" d B e , where M is one element selected from the group consisting of iron, cobalt and nickel, M' is one or two elements selected from the group consisting of iron, cobalt and nickel other than M, M" is at least one element selected from the group consisting of vanadium, manganese, molybdenum, tungsten, niobium and tantalum, "a" ranges from about 40 to 85 atom percent, "b" ranges from 0 to about 45 atom percent, "c" and "d" each range from 0 to about 20 atom percent and "e" ranges from about 15 to 25 atom percent, with the proviso that "b", "c" and "d" cannot all be zero simultaneously.
Claim 3
Dependent Claim
18 words
The amorphous metal alloy of claim 1 in which "e" ranges from about 17 to 22 atom percent.
Claim 4
Dependent Claim
18 words
The amorphous metal alloy of claim 1 in which "c" ranges from about 4 to 16 atom percent.
Claim 5
Dependent Claim
22 words
The amorphous metal alloy of claim 1 in which M" is molybdenum and "d" ranges from about 0.4 to 8 atom percent.
Claim 6
Dependent Claim
18 words
The amorphous metal alloy of claim 4 in which "d" ranges from about 0.4 to 0.8 atom percent.
Claim 7
Dependent Claim
18 words
The amorphous metal alloy of claim 4 in which "d" ranges from about 4 to 8 atom percent.
Claim 8
Dependent Claim
17 words
The amorphous metal alloy of claim 1 consisting essentially of the composition Fe.sub.50-70 (Ni,Co).sub.5-15 Cr.sub.5-16 Mo.sub.0-8 B.sub.16-22.
Claim 9
Dependent Claim
18 words
The amorphous metal alloy of claim 1 consisting essentially of the composition Fe.sub.60-67 Ni.sub.3-7 Co.sub.3-7 Cr.sub.7-10 Mo.sub.0.4-0.8 B.sub.17-20.
Claim 10
Dependent Claim
19 words
The amorphous metal alloy of claim 1 consisting essentially of the composition Ni.sub.40-50 Fe.sub.4-10 Co.sub.5-25 Cr.sub.8-12 Mo.sub.0-9 B.sub.15-22. 10.
Claim 11
Dependent Claim
18 words
the amorphous metal alloy of claim 1 consisting essentially of the composition Co.sub.40-50 Fe.sub.5-20 Ni.sub.0-20 Cr.sub.4-15 Mo.sub.0-9 B.sub.15-23.
Claim 12
Dependent Claim
15 words
The amorphous metal alloy of claim 1 in which "c" and "d" are both zero.
Claim 13
Dependent Claim
25 words
The amorphous metal alloy of claim 9 consisting essentially of the composition Ni 45 Fe 5 Co 20 Cr 10 Mo 4 B 16 .
Claim 14
Dependent Claim
19 words
The amorphous metal alloy of claim 10 consisting essentially of the composition Fe 70 Co 10 B 20 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |