Process for producing an age-hardening copper titanium alloy strip

摘要

A process for producing an age-hardened copper titanium alloy strip includes preparing a copper titanium alloy melt, casting it, hot- working the cast alloy, cold-working the hot-worked alloy as required, annealing the hot-worked or cold-worked alloy, solution heat-treating the annealed alloy, and then the solution heat-treated alloy is age-hardened. The alloy is annealed at a temperature of 500° C. to 700° C. for one to 20 hours. Its solution heat treatment is terminated before or approximately as soon as a precipitated secondary phase has formed a complete solid solution in a master phase, so that the master phase may have an average crystal grain size not exceeding 25 microns. It is preferably terminated within three minutes. The alloy has a titanium content of 2 to 6% by weight.