Heat Treatment of Hypersonic Metallisation Coatings from False Alloys on the Basis of Alloy Ni80Cr20

Evgenij Astrashab1      Aleksandr Grigorchik*2      Marat Belotserkovsky3      Vladimir Kukareko4      

* Corresponding author

1

Joint Institute of Mechanical Engineering National Academy of Sciences of Belarus, Akademicheskaja 12, 220072 Minsk, Belarus

2

Joint Institute of Mechanical Engineering National Academy of Sciences of Belarus, Akademicheskaja 12, 220072 Minsk, Belarus, e-mail: GrigorchikAN@gmail.com

3

Joint Institute of Mechanical Engineering National Academy of Sciences of Belarus, Akademicheskaja 12, 220072 Minsk, Belarus

4

Joint Institute of Mechanical Engineering National Academy of Sciences of Belarus, Akademicheskaja 12, 220072 Minsk, Belarus

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.

Keywords: 
high velocity oxygen fuel, false alloys, phase state, structure, wear resistance
Issue: 
Pages: 
7
14
Accepted: 
01.06.2020
Published: 
31.12.2020
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This article is an open access article distributed under a Creative Commoms Attribution (CCBY 4.0) licence

References: 

Belotserkovsky, M., 2009, Steel Thermal Sprayed Coatings: Superficial Hardening by Nitrogen Ion Implantation, Welding Journal, vol. 88, no. 12, pp. 243–248.

Belotserkovsky, M., 2014, Activation of Process of Electrometallization by a Hypersonic Method, Proceedings of the 1st International Academic Conference ‘Science and Education in Australia, America and Eurasia: Fundamental and Applied Science’, Melbourne, Аustralia, 25 June 2014, vol. 1, pp. 162–165.

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Kryshtal, M.A., 1972, The Diffusion Mechanism in Iron Alloys, Moscow, Russia.

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.

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.

Aleksandr Grigorchik

Citation pattern: Astrashab E., Grigorchik A., Belotserkovsky M., Kukareko V., Heat Treatment of Hypersonic Metallisation Coatings from False Alloys on the Basis of Alloy Ni80Cr20, Scientific Journal of Gdynia Maritime University, No. 116, pp. 7-14, 2020

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