Mechanical properties of the nanostructured Ti processed by combination of the severe plastic deformation methods
Keywords:
deformation, polycrystalline Ti Grade2, equal angular pressing, quasi-extrusion, rolling, mechanical characteristics
Abstract
The polycrystalline Ti Grade2 was subjected to combination of different methods of the severe plastic deformation, such as equal channel angular pressing, quasi hydro extrusion and rolling, and eight different structural states were produced. For each state were measured the following parameters: average grain size, microhardness (at 300 K) and mechanical characteristics in uniaxial compression at 300, 77 and 4.2 K. The concept of mutually complementary modes of plastic deformation differing in the set of active slip systems is introduced. The combination of the modes of plastic deformation was found, which gives the maximal values of the mechanical characteristics at temperatures 300, 77 and 4.2 K. It was shown that decrease of temperature of the preliminary deformation from 300 down to 77 K leads to improvement of the mechanical characteristics of the Ti Grade 2 samples in the whole studied temperature range.
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25. A. Hasnaoui, H. Van Swygenhoven, P.M. Derlet, Acta Mater, 50, 3927 (2002).
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29. S.J. Zhao, K. Albe, H. Hahn. Scripta Mater. 55, 473 (2006).
Published
2018-10-10
How to Cite
Tabachnikova, E. D., Podolskiy, A. V., Smirnov, S. N., Tikhonovsky, M. A., Khaimovich, P. A., Danylenko, N. I., & Firstov, S. A. (2018). Mechanical properties of the nanostructured Ti processed by combination of the severe plastic deformation methods. Journal of V. N. Karazin Kharkiv National University. Series Physics, (28), 63-67. https://doi.org/10.26565/2222-5617-2018-28-6
Section
Articles
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