Β-titanium alloy sheet for high temperature applications

摘要

A cold rollable beta titanium alloy is provided by the present disclosure that exhibits excellent tensile strength, and creep and oxidation resistance at elevated temperatures. In one form, the beta titanium alloy includes molybdenum in an amount ranging between 13.0 wt.% to 20.0 wt.%, niobium between 2.0 wt.% to 4.0 wt.%, silicon between 0.1 wt.% to 0.4 wt.%, aluminum between 3.0 wt.% to 5.0 wt.%, at least one of: zirconium up to 3.0 wt.% and tin up to 5.0 wt.%, oxygen up to 0.25 wt.%, and a balance of titanium and incidental impurities. Additionally, the ranges for each element satisfies the conditions of: (i) 6.0 wt.% X wt.% 7.5 wt.%; and (ii) 3.5 wt.% Y wt.% 5.15 wt.%, where X wt.% = aluminum + tin/3 + zirconium/6 + 10*(oxygen + nitrogen+carbon), and Y wt.% = aluminum + silicon*(zirconium + tin).