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The order of deformation β→τ→α′ (VT22 alloy) and βrarr;α″→α′ (Ti-10-2-3 alloy) phase transformations taking place during cold deformation of metastable β-solid solution has been established. Crystallogeometrical model of mentioned above transformations was proposed. The martensitic phases (τ,α", α′) generated during cold plastic deformation were shown to have a limited angles range between close-packed directions in close-packed plane. The angle between close-packed directions was shown to change in step sequence during phase transformation. Morphology features of formed structure under different deformation ratios were considered.

Features of structural and phase composition, physical and mechanical properties formation of VT16 alloy during quenching from temperature range 700-875°C were determined. For the first time formation of athermal ω-phase during quenching of the VT16 alloy within initial (α+β)-structure was experimentally shown. According to the summarized XRD and TEM data diagram of volume fraction variation depending on quenching temperature was proposed. Minimum of yield strength in the certain quenching temperature range was confirmed to be connected with the behavior of martensitic β → α″-transformation during tensile testing. Fine correlation between the Young's Module and phase composition variation was shown.