PRODUCTION OF TITANIUM ALLOY FORGED PARTS BY THERMOMECHANICAL PROCESSING

摘要

An alpha-beta titanium alloy prepared through a thermomechanical process using a three-step thermal treatment. The first step includes a heat up and hold at a temperature above the beta transition temperature, while the second step is a stabilization treatment which includes a heat up and hold below the beta transition temperature, in the alpha-beta range. The third thermal treatment is an aging treatment. The invention is particularly useful in preparing forged parts for aircraft. Figures 1A-1C are photomicrographs of a titanium alloy forging taken near the center, the surface and the edge respectively.