Patent ID: 7261782

Claim:
A titanium alloy having a high elastic deformation capability, comprising a Va group (vanadium group) element in an amount of from 30 to 60%, and the balance of titanium substantially, when the entirety is taken as 100% (percentage by mass: being the same hereinafter), wherein the titanium alloy is obtained by subjecting a cold-worked member, to which a work strain is given by a cold-working step, to an aging treatment so that the Larson-Miller parameter “P” (hereinafter simply referred to as the parameter “P”) falls in a range of from 8.0 to 18.5 at a treatment temperature falling in a range of from 150° C. to 600° C.; and the titanium alloy has a tensile elastic limit strength of 950 MPa or more and an elastic deformation capability of 1.6% or more.