Titanium alloy having high ductility, fatigue strength and rigidity and method of manufacturing same

摘要

A titanium alloy is provided wherein metal boride is uniformly crystallized and/or precipitated in the matrix. The heating temperature in the finishing hot working is set smaller than the &bgr; transus temperature by not less than 10° C., thereby causing the matrix to include an equiaxial &agr; structure in a rate of not less than 40 vol %. This titanium alloy has excellent properties, i.e., high rigidity, ductility and fatigue strength, which are all required for structural components, and therefore can be widely applied to a mechanical component such as an engine of an automobile, a structural component in an aircraft as well as a component for a high speed rail vehicle.