.ALPHA. + .BETA. TYPE TITANIUM ALLOY, A TITANIUM ALLOY STRIP, COIL-ROLLING PROCESS OF TITANIUM ALLOY, AND PROCESS FOR PRODUCING A COLD-ROLLED TITANIUM ALLOY STRIP

摘要

A high strength and ductility .alpha. + .beta. type titanium alloy, comprising at least one isomorphous .beta. stabilizing element in a Mo equivalence of 2.0 - 4.5 mass %, at least one eutectic .beta. stabilizing element in an Fe equivalence of 0.3 - 2.0 mass %, and Si in an amount of 0. 1 - 1 .5 mass %, and optionally comprising C in an amount of 0.01 - 0.15 % mass.