PROBLEM TO BE SOLVED: To provide a titanium alloy processed article excellent in mechanical strength and ductility and a method for production thereof.SOLUTION: There is provided a method for production of a titanium alloy processed article for organism including a process of imparting a strain of 15 to 400 as an equivalent strain to an α+β type titanium alloy to lessen the size of a crystal grain by holding the α+β type titanium alloy between the facing two anvils and by relatively rotating at least one of two anvils while applying the pressure of 1 to 30 GPa. There is also provided the titanium alloy processed article produced by processing of the α+β type titanium alloy and having a tensile strength of 1,100 MPa or more and an elongation at break of 10% or more.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】機械的強度及び延性に優れる生体用チタン合金加工品、及びその製造方法を提供する。【解決手段】対向する二つのアンビル間にα+β型チタン合金を挟み、1GPa以上30GPa以下の圧力をかけながら、二つのアンビルの少なくとも一方を相対的に回転させることにより、α+β型チタン合金に相当ひずみ15以上400以下のひずみを付与して結晶粒を小さくする工程、を含む、生体用チタン合金加工品の製造方法、並びに、α+β型チタン合金を加工してなり、引張強さが1100MPa以上で、破断伸びが10%以上である、生体用チタン合金加工品。【選択図】図1
