Manufacturing method of titanium alloy rod for spinal fixation and titanium alloy rod for spinal fixation

摘要

PROBLEM TO BE SOLVED: To provide a titanium alloy rod for spinal fixation capable of achieving both high strength and low rigidity at a higher level. SOLUTION: Nb: 25 to 37% by mass, Ta: Nb + 0.8Ta, 36 to 45% by mass, Zr: 2 to 6% by mass, O: 0 to 1.0% by mass, the balance is Ti and unavoidable impurities. A titanium alloy rod (10) for spinal fixation having a first region (11) in which the α phase is precipitated in the β phase and a second region (12) composed of the β phase. [Selection diagram] Fig. 1