Alpha-beta titanium alloy with improved high temperature properties and superplasticity

摘要

A high strength alpha-beta titanium alloy is provided having improved high temperature oxidation resistance, high temperature strength and creep resistance, and improved superplasticity. In one form, the alloy is about 4.5 wt% to about 5.5 wt% aluminum, about 3.0 wt% to about 5.0 wt% vanadium, about 0.3 wt% to about 1.8 wt% molybdenum, About 0.2 wt% to about 1.2 wt% of iron, about 0.12 wt% to about 0.25 wt% of oxygen, about 0.10 wt% to about 0.40 wt% of silicon, the balance being titanium and unavoidable impurities And each unavoidable impurity is less than about 0.1 wt%, and less than about 0.5 wt% in total. [Selected figure] Figure 3