Metal treatment – Stock – Titanium – zirconium – or hafnium base
Patent
1998-04-09
1999-11-09
Sheehan, John P.
Metal treatment
Stock
Titanium, zirconium, or hafnium base
420420, C22C 1400
Patent
active
059806559
ABSTRACT:
Titanium alloys comprising from about 2.5% to about 5.4% aluminum, from about 2.0% to about 3.4% vanadium, from about 0.2% to about 2.0% iron, and from 0.2% to about 0.3% oxygen are described. Such alloys also can comprise elements selected from the group consisting of chromium, nickel, carbon, nitrogen, perhaps other trace elements, and mixtures thereof, wherein the weight percent of each such element is 0.1% or less, and wherein the total weight of such elements is generally about 0.5% or less. A method for producing titanium alloys also is described. The method first comprises providing an ingot having the composition described above, and then .alpha.-.beta. processing the ingot to provide an .alpha.-.beta. alloy. Armor plates comprising an .alpha.-.beta.-processed titanium alloy also are described, as well as a method for making such armor plates. Armor plates produced according to the method with thicknesses of from about 0.625 inch to about 0.679 inch (from about 15.9 mm to about 17.2 mm) have V.sub.50 values of about 600 m/s or greater.
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English-language abstract of Japanese Patent Application No. 01270231, Jun. 7, 1991.
Oremet-Wah Chang
Sheehan John P.
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