Abstract
Beta-C is a metastable titanium alloy with an alpha to beta transition temperature of 802 C and the high temperature beta phase readily retained at room temperature. The beta phase has a body centered cubic (bcc) structure and the alpha phase has a hexagonal close packed (hcp) structure. This alloy has a combination of good strength, ductility and fracture toughness as well as good corrosion resistance and low density. This has resulted in an interest in this alloy for use in a variety of industries. The Navy is investigating the use of this alloy as a replacement material for the steam catapults on aircraft carriers. The oil industry has found use for this alloy in tis transport piping systems, and a whole production schedule has been created for manufacturing Beta-C titanium for aircraft hydraulic lines. However, these properties are extremely sensitive to the thermo-mechanical processing (TMP) of the alloy. A study was undertaken in order to elucidate the effects of solution heat treatment, cold rolling and aging on the phase morphology, microstructure and hardness of Beta-C titanium. Preliminary results on the effects of solution heat treatment and cold rolling of this alloy are presented.
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