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Influence of Low-Temperature Superplastic Deformation on the Structural-Phase State and Mechanical Properties of the Ultrafine-Grained VT22 Alloy

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The influence of low-temperature superplastic deformation on the structural-phase state and mechanical properties of ultrafine-grained titanium alloy VT22 has been studied at room temperature. It is shown that the tensile strain of alloy samples has an insignificant effect on their mechanical properties at strain rates of 2·10–3 and 6.9·1–3 s–1 and a temperature of 823 K. It has been established that this effect is due to the preservation of the ultra fine grade (UFG) structural-phase state of the alloy during superplastic deformation formed as a result of its processing by the method of all-round pressing. An increase in the deformation temperature to 873 K at the same strain rates leads to a decrease in the mechanical properties of the alloy by about 6–8%.

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Authors and Affiliations

  1. Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

    I. V. Ratochka, E. V. Naydenkin, I. P. Mishin & O. N. Lykova

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  1. I. V. Ratochka
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  2. E. V. Naydenkin
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  3. I. P. Mishin
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  4. O. N. Lykova
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Correspondence to I. V. Ratochka.

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Ratochka, I.V., Naydenkin, E.V., Mishin, I.P. et al. Influence of Low-Temperature Superplastic Deformation on the Structural-Phase State and Mechanical Properties of the Ultrafine-Grained VT22 Alloy. Russ Phys J 66, 385–390 (2023). https://doi.org/10.1007/s11182-023-02951-y

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