beta-TYPE Ti-Zr-BASED ALLOY, MANUFACTURING METHOD THEREFOR, AND beta-TYPE Ti-Zr-BASED ALLOY MEMBER

摘要

PPROBLEM TO BE SOLVED: To provide a -type Ti-Zr-based alloy which has a Young's modulus effectively reduced, while securing equal or higher strength to or than that of a conventional material for a golf club head. PSOLUTION: The -type Ti-Zr-based alloy includes, by mass%, 25-85% Ti, 10-60% Zr and 5-15% Cr so that the total content of Ti, Zr and Cr can be 95 mass% or more; has a matrix structure formed of a metastable -phase having a cubic system; has the Young's modulus controlled to a range between 50 GPa and 100 GPa; and has an internal friction controlled to a range between 110SP-5/SPand 310SP-4/SP. PCOPYRIGHT: (C)2006,JPO&NCIPI