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The Influence of Equal Channel Angular Pressing on Structure and Mechanical Properties of New β-Ti Alloy Ti–10Mo–8Nb–6Zr

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Abstract

This work presents comparative studies of structural and mechanical properties of a new β-Ti alloy Ti–10Mo–8Nb–6Zr exposed to conventional cold rotational forging and equal channel angular pressing (ECAP) at 250°C. The main phase in the initial quenched state after forging and ECAP is the BCC β phase. Broadening of X-ray lines of the β phase and TEM data indicate refinement of structure and increase in concentration of lattice defects after deformational treatment. In the initial state, the alloy has ultimate tensile strength of about 700 MPa, the yield stress of 450 MPa, and relative elongation to failure of ~30%. As a consequence of forging, the ultimate strength and yield stress of Ti–10Mo–8Nb–6Zr alloy increase to 1230 and 950 MPa, and after ECAP, they increase to 1280 and 1270 MPa, respectively; also, the relative elongation decreases to 6%. Significant improvement of strength properties of Ti–10Mo–8Nb–6Zr alloy exposed to ECAP makes it more promising for application in the medical field.

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Notes

  1. Here and below compositions of the alloys are give in wt %.

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ACKNOWLEDGMENTS

We are grateful to the Shared Use Center Nanotekh, USATU (http://nanotech.ugatu.ac.ru).

Funding

This work was supported by the Russian Foundation for Basic Research, project BRIKS_t 19-58-80018 (TEM studies), and the Russian Science Foundation, project no. 20-69-47029 (ECAP, XRS).

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Authors and Affiliations

  1. Institute of Molecule and Crystal Physics (IMCP), Ufa Federal Research Center, Russian Academy of Sciences, 450008, Ufa, Russia

    D. V. Gunderov, A. A. Churakova & Yu. A. Lebedev

  2. Ufa State Aviation Technical University (USATU), 450054, Ufa, Russia

    D. V. Gunderov, A. A. Churakova, A. G. Raab & S. D. Gunderova

  3. Bashkir State University, 450076, Ufa, Russia

    A. V. Polyakov

  4. Perm National Research Polytechnic University (PNIPU), 614990, Perm, Russia

    A. V. Polyakov

  5. São Paulo State University, 05508-060, São Paulo, Brazil

    Ana Paula Rosifini Alves Claro

Authors
  1. D. V. Gunderov
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  2. A. A. Churakova
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  3. A. V. Polyakov
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  4. A. G. Raab
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  5. S. D. Gunderova
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  6. Yu. A. Lebedev
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  7. Ana Paula Rosifini Alves Claro
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Corresponding authors

Correspondence to D. V. Gunderov, A. A. Churakova, A. V. Polyakov, A. G. Raab, S. D. Gunderova, Yu. A. Lebedev or Ana Paula Rosifini Alves Claro.

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Gunderov, D.V., Churakova, A.A., Polyakov, A.V. et al. The Influence of Equal Channel Angular Pressing on Structure and Mechanical Properties of New β-Ti Alloy Ti–10Mo–8Nb–6Zr. Russ. J. Non-ferrous Metals 63, 664–670 (2022). https://doi.org/10.3103/S1067821222060086

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