Abstract
Ti–22.4Nb–0.73Ta–2.0Zr–1.34O (at. %) alloy after cold compression to ∼5.2% strain was investigated. The alloy exhibited multiple plastic deformation mechanisms, including the stress-induced α″ martensitic (SIM α″) and ω phase transformations, 1/2⟨111⟩ dislocations slipping on the {112}β planes as well as {332}⟨113⟩β and {112}⟨111⟩β twinning, which have not previously been reported to coexist in a titanium alloy. It was also found that β phase with the {200} planes vertical to the compression direction was almost completely consumed away by a β→SIM α″ transformation, and a (100) texture of SIM α″ formed.
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