MANUFACTURE OF COLD WORKED TITANIUM ALLOY MATERIAL

摘要

PURPOSE:To extend the usefulness of a cold worked titanium alloy material by properly combining the soln. heat treatment of a Ti-15V-3Cr-3Sn-3Al titanium alloy with the cold working rate so as to improve the mechanical properties. CONSTITUTION:The composition of a titanium alloy is composed of, by weight, 14-16% V, 2.5-3.5% Cr, 2.5-3.5% Sn, 2.5-3.5% Al and the balance Ti with inevitable impurities. The alloy is subjected to soln. heat treatment by holding at 830-1,150 deg.C for 3min-5hr and cooling at =18 deg.C/min cooling rate. The alloy is then cold worked at =50% cold working rate.