High temperature titanium alloys
AssigneeATI Properties, Inc.
InventorsJohn V. Mantione, David J. Bryan, Matias Garcia-Avila
Life of this patent
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Abstract
A non-limiting embodiment of a titanium alloy comprises, in percent by weight based on total alloy weight: 5.1 to 6.5 aluminum; 1.9 to 3.2 tin; 1.8 to 3.1 zirconium; 3.3 to 5.5 molybdenum; 3.3 to 5.2 chromium; 0.08 to 0.15 oxygen; 0.03 to 0.20 silicon; 0 to 0.30 iron; titanium; and impurities. A non-limiting embodiment of the titanium alloy comprises an intentional addition of silicon in conjunction with certain other alloying additions to achieve an aluminum equivalent value of at least 6.9 and a molybdenum equivalent value of 7.4 to 12.8, which was observed to improve tensile strength at high temperatures.
Claims70
A titanium alloy comprising, in percent by weight based on total alloy weight:
- 5.5 to 6.5 aluminum;
- 2.2 to 3.2 tin;
- 1.8 to 3.1 zirconium;
- 3.8 to 5.5 molybdenum;
- 3.3 to 4.7 chromium;
- 0.08 to 0.15 oxygen;
- 0.03 to 0.20 silicon;
- 0.06 to 0.30 iron;
- 0 up to 0.1 of each of niobium, tungsten, hafnium, nickel, gallium, antimony, vanadium, tantalum, manganese, and cobalt, and copper;
- titanium;
- and
- impurities.
A titanium alloy comprising, in percent by weight based on total alloy weight:
- 5.6 to 6.1 aluminum;
- 2.5 to 3.2 tin;
- 2.6 to 3.1 zirconium;
- 3.8 to 5.0 molybdenum;
- 3.3 to 4.3 chromium;
- 0.08 to 0.14 oxygen;
- 0.04 to 0.20 silicon;
- 0.06 to 0.25 iron;
- 0 to 0.05 nitrogen;
- 0 to 0.05 carbon;
- 0 to 0.015 hydrogen;
- and
- 0 up to 0.1 of each of niobium, tungsten, hafnium, nickel, gallium, antimony, vanadium, tantalum, manganese, cobalt, and copper;
- titanium;
- and
- impurities.
A titanium alloy comprising, in percent by weight based on total alloy weight:
- 5.5 to 6.5 aluminum;
- 2.2 to 3.2 tin;
- 1.8 to 3.1 zirconium;
- 3.8 to 5.5 molybdenum;
- 3.3 to 4.7 chromium;
- 0.08 to 0.15 oxygen;
- 0.03 to 0.20 silicon;
- 0.06 to 0.30 iron;
- 0 to less than 0.1 niobium;
- 0 to 0.1 vanadium;
- titanium;
- and
- impurities.
A titanium alloy comprising, in percent by weight based on total alloy weight:
- 5.5 to 6.5 aluminum;
- 2.2 to 3.2 tin;
- 1.8 to 3.1 zirconium;
- 3.8 to 5.5 molybdenum;
- 3.3 to 4.7 chromium;
- 0.08 to 0.15 oxygen;
- 0.03 to 0.20 silicon;
- 0.06 to 0.30 iron;
- 0 to no greater than 0.1 vanadium;
- titanium;
- and
- impurities.
A titanium alloy comprising, in percent by weight based on total alloy weight:
- 5.5 to 6.5 aluminum;
- 2.2 to 3.2 tin;
- 1.8 to 3.1 zirconium;
- 3.8 to 5.5 molybdenum;
- 3.3 to 4.7 chromium;
- 0.08 to 0.15 oxygen;
- 0 to 0.05 silicon;
- 0.06 to 0.30 iron;
- 0 to no greater than 0.1 manganese;
- titanium;
- and
- impurities.
A titanium alloy comprising, in percent by weight based on total alloy weight:
- 5.5 to 6.5 aluminum;
- 2.2 to 3.2 tin;
- 1.8 to 3.1 zirconium;
- 3.8 to 5.5 molybdenum;
- 3.3 to 4.7 chromium;
- 0.08 to 0.15 oxygen;
- 0.03 to 0.20 silicon;
- 0.06 to 0.30 iron;
- 0 to no greater than 0.1 copper;
- titanium;
- and
- impurities.
A titanium alloy consisting of, in percent by weight based on total alloy weight:
- 5.5 to 6.5 aluminum;
- 2.2 to 3.2 tin;
- 1.8 to 3.1 zirconium;
- 3.8 to 5.5 molybdenum;
- 3.3 to 4.7 chromium;
- 0.08 to 0.15 oxygen;
- 0 to less than 0.1 silicon;
- 0.06 to 0.30 iron;
- 0 up to 0.1 of each of niobium, tungsten, hafnium, nickel, gallium, antimony, vanadium, tantalum, manganese, cobalt, and copper;
- 0 to 0.05 nitrogen;
- 0 to 0.05 carbon;
- 0 to 0.015 hydrogen;
- titanium;
- and
- impurities.
Dependencies are inferred from the claim text.