Structure and phase composition of hypereutectic silumin alloy Al – 20Si after compression plasma flows impact

  • Vitali I. Shymanski Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus
  • Antons Jevdokimovs Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus https://orcid.org/0000-0002-4577-7230
  • Nikolai N. Cherenda Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus https://orcid.org/0000-0002-2394-5117
  • Valiantsin M. Astashynski A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Broŭki Street, Minsk 220072, Belarus https://orcid.org/0000-0001-5297-602X
  • Elizaveta A. Petrikova Institute of High-Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2 Akademicheskii Avenue, 3 building, Tomsk 634055, Russia
DOI: https://doi.org/10.33581/2520-2243-2021-2-25-33

Abstract

The results of structure and phase composition investigation in hypereutectic silumin alloy with 25 at. % Si content after high-energy pulsed compression plasma flows impact are presented in the work. The compression plasma flows impact with an absorbed energy density 25 – 40 J/cm2 allows to modify the sub-surface layer with a thickness up to 30 – 32 µm due to its melting and high rate solidification. By means of X-ray diffraction method, it was found the formation of two silicon phases with different grain sizes. The high-dispersed structure of silicon is presented in the Al-Si eutectic while the silicon phase with coarse grains exists in the primary crystals. The obtained results are the basis for a new method development for nanostructuring of the surface layers of hypereutectic silumin alloys increasing its wear resistance.

Author Biographies

Vitali I. Shymanski, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; associate professor at the department of solid-state physics, faculty of physics

Antons Jevdokimovs, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

student at the faculty of physics

Nikolai N. Cherenda, Belarusian State University, 4 Niezaliežnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; associate professor at the department of solid-state physics, faculty of physics

Valiantsin M. Astashynski, A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Broŭki Street, Minsk 220072, Belarus

corresponding member of the National Academy of Sciences of Belarus, doctor of science (physics and mathematics); vice-director on science and innovations

Elizaveta A. Petrikova, Institute of High-Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2 Akademicheskii Avenue, 3 building, Tomsk 634055, Russia

junior researcher at the laboratory of plasma-emission electronics

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Published
2021-05-21
Keywords: hypereutectic silumin alloy, silicon, surface modification, compression plasma flows, X-ray diffraction, microstrains
Supporting Agencies This work was supported by the Belarusian Republican Foundation for Fundamental Research and Russian Foundation for Basic Research (project No. Т19РМ-091).
How to Cite
Shymanski, V. I., Jevdokimovs, A., Cherenda, N. N., Astashynski, V. M., & Petrikova, E. A. (2021). Structure and phase composition of hypereutectic silumin alloy Al – 20Si after compression plasma flows impact. Journal of the Belarusian State University. Physics, 2, 25-33. https://doi.org/10.33581/2520-2243-2021-2-25-33
Issue
No 2 (2021): Journal of the Belarusian State University. Physics
Section
Condensed State Physics

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