Titanium alloy
AssigneeATI Properties, Inc.
InventorJohn W. Foltz, IV
Life of this patent
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Abstract
An alpha-beta titanium alloy comprises, in weight percentages: an aluminum equivalency in the range of 2.0 to 10.0; a molybdenum equivalency in the range of 0 to 20.0; 0.3 to 5.0 cobalt; and titanium. In certain embodiments, the alpha-beta titanium alloy exhibits a cold working reduction ductility limit of at least 25%, a yield strength of at least 130 KSI (896.3 MPa), and a percent elongation of at least 10%. A method of forming an article comprising the cobalt-containing alpha-beta titanium alloy comprises cold working the cobalt-containing alpha-beta titanium alloy to at least a 25 percent reduction in cross-sectional area. The cobalt-containing alpha-beta titanium alloy does not exhibit substantial cracking during cold working.
Claims33
An alpha-beta titanium alloy comprising, in weight percentages:
- at least 2.1 vanadium;
- about 0.24 to 0.5 oxygen;
- an aluminum equivalency in the range of 2.0 to 10.0;
- a molybdenum equivalency in the range of 2.0 to 20.0;
- 0.3 to 5.0 cobalt;
- titanium;
- and
- incidental impurities.
An alpha-beta titanium alloy comprising, in weight percentages:
- 2.0 to 7.0 aluminum;
- at least 2.1 vanadium;
- a molybdenum equivalency in the range of 2.0 to 5.0;
- 0.3 to 4.0 cobalt;
- about 0.24 to 0.5 oxygen;
- up to 0.25 nitrogen;
- up to 0.3 carbon;
- up to 0.4 of incidental impurities;
- and
- titanium.
An alpha-beta titanium alloy comprising, in weight percentages:
- an aluminum equivalency in the range of 2.0 to 10.0;
- a molybdenum equivalency in the range of 2.0 to 5.0;
- at least 2.1 vanadium;
- 0.3 to 5.0 cobalt;
- titanium;
- and
- incidental impurities;
- and
- wherein the alpha-beta titanium alloy comprises no more than an incidental concentration of molybdenum.
An alpha-beta titanium alloy comprising, in weight percentages:
- 2.0 to 7.0 aluminum;
- at least 2.1 vanadium;
- a molybdenum equivalency in the range of 2.0 to 5.0;
- 0.3 to 4.0 cobalt;
- up to 0.5 oxygen;
- up to 0.25 nitrogen;
- up to 0.3 carbon;
- up to 0.4 of incidental impurities;
- and
- titanium;
- and
- wherein the alpha-beta titanium alloy comprises no more than an incidental concentration of molybdenum.
Dependencies are inferred from the claim text.