US4419130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium-diboride dispersion strengthened iron materials
Assignee: RTX Corp
•
Filing: 1980-11-19
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Granted: 1983-12-06
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Expires: 2000-11-19
Abstract
Abstract A class of iron base materials which derive improved properties from the presence of a finely dispersed titanium diboride phase is described. The materials comprise a ferrous matrix containing a fine relatively uniform dispersion of titanium diboride particles are typically less than 0.1 micron in diameter and are present in number densities of 10 10 per mm 3 or greater. These materials are produced by the rapid solidification of an iron alloy containing titanium and boron. Powder metallurgy techniques may be employed.
Inventors
- 👤 Edward R. Slaughter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:31
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0207; C22C33/0228
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
60 words
A high strength iron base material consisting of a ferrite matrix which contains from about 0.2 to about 10 weight percent of XB 2 precipitate particles where X is selected from the group consisting of titanium, zirconium, and hafnium and mixtures thereof, with the particles being present in a number density of at least 10 10 per mm 3 .
Claim 2
Dependent Claim
60 words
A high strength iron base material consisting of a ferrite matrix which contains from about 0.2 to about 10 weight percent of XB 2 precipitate particles where X is selected from the group consisting of titanium, zirconium, and hafnium and mixtures thereof, with the particles being present in a number density of at least 10 10 per mm 3 .
Claim 3
Dependent Claim
20 words
A material as in claim 1 in which the atomic ratio of "X" to "B" is between 0.4 and 2.0.
Claim 4
Dependent Claim
20 words
A material as in claim 1 in which the atomic ratio of "X" to "B" is between 0.4 and 0.6.
Claim 5
Dependent Claim
32 words
A material as in claim 1 in which X is present in an amount between 0.15 and 1.0% in excess of that required to produce a stoichiometric amount of XB 2 .
Claim 6
Dependent Claim
15 words
A material as in claims 1, 2, 3 or 4 in which X is Ti.
Claim 7
Dependent Claim
15 words
A material as in claim 1 which further contains up to 30 weight percent aluminum.
Claim 8
Dependent Claim
82 words
A material as in claim 1 which contains at least one element selected from the group consisting of (by weight): up to 30% aluminum; up to 20% chromium; up to 20% tungsten; up to 1.0% silicon; up to 15% nickel; up to 10% molybdenum; up to 5% manganese; up to 5% vanadium; up to 5% cobalt; up to 5% copper; up to 5% columbium; up to 5% tantalum and mixtures thereof with iron being present in an amount of at least 60%.
Claim 9
Independent Claim
75 words
A method for producing a ferrous article having an in situ developed fine dispersion of TiB 2 particles consisting of: a. providing a molten ferrous alloy containing Ti and B with the atomic ratio of Ti:B being greater than 0.4 and less than 2.0; b. solidifying the alloy at a rate in excess of 100° C./sec using an atomization technique; c. forming the solidified alloy into a unitary mass; d. hot working the unitary mass.
Claim 10
Independent Claim
75 words
A method for producing a ferrous article having an in situ developed fine dispersion of TiB 2 particles consisting of: a. providing a molten ferrous alloy containing Ti and B with the atomic ratio of Ti:B being greater than 0.4 and less than 2.0; b. solidifying the alloy at a rate in excess of 100° C./sec using an atomization technique; c. forming the solidified alloy into a unitary mass; d. hot working the unitary mass.
Claim 11
Dependent Claim
27 words
A method as in claim 8 wherein the alloy contains sufficient Ti and B to provide from 0.2 to 10 weight percent of TiB 2 after solidification.
Claim 12
Dependent Claim
19 words
A method as in claim 8 wherein the alloy is solidified at a rate in excess of 10,000° C./sec.
Claim 13
Dependent Claim
22 words
A method as in claim 8 wherein the hot working is equivalent to or in excess of a true strain of 1.5.
Claim 14
Dependent Claim
20 words
A method as in claim 8 wherein the hot working is performed at a temperature between 1300° and 2000° F.
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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) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |