abbr. SJ GMU
ISSN 2657-5841 (printed)
ISSN 2657-6988 (online)
DOI: 10.26408
Deformation-Activated Martensitic Transformation in Coatings Obtained by Hypersonic Metallisation of High-Chromium Steel
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
Abstract:
The structural-phase state and wear resistance of coatings from high-chromium AISI 420 and A756 steels obtained by hypersonic metallisation (HM) were studied. It has been shown that coatings from martensitic steels after deposition contain an increased amount of metastable austenitic phase. In particular, 15 vol.% γ-faze is registered in a AISI 420 steel coating, and 70 vol.% γ-faze in a A756 steel coating. It has been established that during friction of hypersonic metallisation coatings of high-chromium steels, deformation-activated γ→α transformation in their surface layers leads to a significant increase in microhardness and the wear resistance of coatings.
Keywords:
hypersonic metallisation, high-chromium steel, metastable austenitic phase, deformation-activated γ→α transformation, wear resistance
Issue:
Pages:
20
26
Doi:
Submitted:
16.09.2020
Accepted:
10.02.2021
Published:
31.03.2021
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Aleksandr Grigorchik