Beta enhanced titanium alloys and methods for manufacturing beta enhanced titanium alloys

Abstract

This invention provides an α-β titanium alloy comprising aluminum, vanadium, and molybdenum. The α-β titanium alloy comprises aluminum (Al) between 5.0 wt% and 8.0 wt%, vanadium (V) between 1.0 wt% and 5.5 wt%, and molybdenum (Mo) between 0.75 wt% and 2.5 wt%. The density of the α-β titanium alloy is between 4.35 g / cc and 4.50 g / cc.

Claims

1. A titanium alloy comprising: an α-β titanium alloy; wherein the α-β titanium alloy comprises: iron (Fe) between 0.5 wt% and 1.0 wt%, aluminum (Al) between 5.0 wt% and 8.0 wt%, vanadium (V) between 1.0 wt% and 5.5 wt%, molybdenum (Mo) between 0.75 wt% and 2.5 wt%, and optionally includes: silicon (Si) between 0.1 wt% and 0.2 wt%, oxygen (O) or less, copper (Cu) less than 0.1 wt%, nickel (Ni) less than 0.1 wt%, and the balance titanium (Ti); a density; wherein the density is between 4.35 g / cc and 4.50 g / cc.

2. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains between 6.0 wt% and 8.0 wt% aluminum (Al).

3. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains between 5.0 wt% and 7.0 wt% aluminum (Al).

4. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains between 6.0 wt% and 7.0 wt% aluminum (Al).

5. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains 0.20 wt% or less oxygen (O).

6. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains 0.15 wt% or less oxygen (O).

7. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains between 1.5 wt% and 3.5 wt% vanadium (V).

8. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains between 3.0 wt% and 5.0 wt% vanadium (V).

9. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains between 3.5 wt% and 5.5 wt% vanadium (V).

10. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains molybdenum (Mo) between 1.5 wt% and 2.5 wt%.

11. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains molybdenum (Mo) between 0.75 wt% and 1.75 wt%.

12. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy contains molybdenum (Mo) between 1.0 wt% and 2.0 wt%.

13. The titanium alloy as claimed in claim 1, wherein one of the melting points of the α-β titanium alloy is between 800°C and 1,000°C.

14. The titanium alloy as claimed in claim 13, wherein one of the melting points of the α-β titanium alloy is less than 930°C.

15. The titanium alloy as claimed in claim 13, wherein one of the melting points of the α-β titanium alloy is between 800°C and 930°C.

16. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy has a minimum yield strength between 150 ksi and 160 ksi.

17. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy has a minimum elongation between 4.5% and 8.0%.

18. The titanium alloy as claimed in claim 17, wherein the α-β titanium alloy has a minimum elongation of less than 8.0%.

19. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy has a Young's modulus between 15.4 Mpsi and 16.9 Mpsi.

20. The titanium alloy as claimed in claim 1, wherein the α-β titanium alloy has a minimum tensile strength between 157 ksi and 170 ksi.

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