abbr. SJ GMU
ISSN 2657-5841 (printed)
ISSN 2657-6988 (online)
DOI: 10.26408
Heat Treatment of Hypersonic Metallisation Coatings from False Alloys on the Basis of Alloy Ni80Cr20
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
Doi:
Submitted:
17.01.2020
Accepted:
01.06.2020
Published:
31.12.2020
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Aleksandr Grigorchik