Heat treatment of hypersonic metallisation coatings from false alloys on the basis of alloy Ni80Cr20

Authors

  • Evgenij Astrashab Joint Institute of Mechanical Engineering National Academy of Sciences of Belarus, Akademicheskaja 12, 220072 Minsk, Belarus
  • Aleksandr Grigorchik Joint Institute of Mechanical Engineering National Academy of Sciences of Belarus, Akademicheskaja 12, 220072 Minsk, Belarus
  • Marat Belotserkovsky Joint Institute of Mechanical Engineering National Academy of Sciences of Belarus, Akademicheskaja 12, 220072 Minsk, Belarus
  • Vladimir Kukareko Joint Institute of Mechanical Engineering National Academy of Sciences of Belarus, Akademicheskaja 12, 220072 Minsk, Belarus

Keywords:

high velocity oxygen fuel, false alloys, phase state, structure, wear resistance

Abstract

The structural-phase state and tribomechanical characteristics of hypersonic metallisation (HM) coatings from false alloys ‘Ni80Cr20 + Al99,3’ and ‘Ni80Cr20 + 08Mn2Si’ in the initial state and after annealing at 550° С and 650°С were investigated. It is shown that annealing of the coating from the false alloy ‘Ni80Cr20 + Al99,3’ leads to a significant increase in its microhardness and wear resistance. In particular, the microhardness of the coating increases ≈ 2 times, and the wear resistance ≈ 19 times in comparison with the initial state. Annealing of the coating from ‘Ni80Cr20 + 08Mn2Si’ leads to a decrease in its microhardness by 1.4 times, and wear resistance decreases by 3.0 times compared with the initial state.

References

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5. Kukareko, V.A., 2019, Structural-Phase State and Tribotechnical Properties of Pseudo-Alloys Sprayed from High-Chromium Steels and Non-Ferrous Metal, Hardening Technologies and Coatings, vol. 15, no. 8, pp. 355–359.

6. Kukareko, V.A., Belotserkovsky, M.A., Effect of Annealing on the Structural Phase State and Wear Resistance of Gas-Thermal Coatings of Iron-Aluminum Alloys, Actual Issues of Engineering, vol. 8, pp. 49–53.

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Published

2020-12-30

How to Cite

Astrashab, E., Grigorchik, A., Belotserkovsky, M., & Kukareko, V. (2020). Heat treatment of hypersonic metallisation coatings from false alloys on the basis of alloy Ni80Cr20. Scientific Journal of Gdynia Maritime University, 1(116), 7–14. Retrieved from https://ojs.umg.edu.pl/index.php/sjgmu/article/view/38

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