Structure of the Surface Layers of Metastable Austenitic Stainless Steel Nitrided in Electron Beam Plasma
- Autores: Shabashov V.1, Gavrilov N.2, Kozlov K.1, Makarov A.1,3,4, Titova S.4,5, Voronin V.1
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Afiliações:
- Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
- Institute of Electrophysics, Ural Branch, Russian Academy of Sciences
- Institute of Machine Science, Ural Branch, Russian Academy of Sciences
- Yeltsin Ural Federal University
- Institute of Metallurgy, Ural Branch, Russian Academy of Sciences
- Edição: Volume 119, Nº 8 (2018)
- Páginas: 755-763
- Seção: Structure, Phase Transformations, and Diffusion
- URL: https://journals.rcsi.science/0031-918X/article/view/167736
- DOI: https://doi.org/10.1134/S0031918X18080124
- ID: 167736
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Resumo
The effect of the nitriding temperature in electron beam plasma on the structural and phase composition of the surface layers of metastable austenitic stainless steels is studied. Conversion electron Mössbauer spectroscopy shows that nitriding at 350°C results in the transition of the austenite into the α (bcc) phase by the shear mechanism in the surface layers of a plate (tenths of a micron). A nitrogen supersaturated austenite and a mixture of nitrides with a predominant configuration of three nitrogen atoms in the environment of iron are formed in layers 1–5 μm thick. Nitriding at a temperature of 500°C and above leads to nitrogen supersaturated austenite decomposition, the escape of chromium and nitrogen from the matrix into nitrides CrN, Fe4N, and FexN, and the subsequent γ → α phase transformation.
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Sobre autores
V. Shabashov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Autor responsável pela correspondência
Email: shabashov@imp.uran.ru
Rússia, Ekaterinburg, 620108
N. Gavrilov
Institute of Electrophysics, Ural Branch, Russian Academy of Sciences
Email: shabashov@imp.uran.ru
Rússia, Ekaterinburg, 620016
K. Kozlov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: shabashov@imp.uran.ru
Rússia, Ekaterinburg, 620108
A. Makarov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Institute of Machine Science, Ural Branch, Russian Academy of Sciences; Yeltsin Ural Federal University
Email: shabashov@imp.uran.ru
Rússia, Ekaterinburg, 620108; Ekaterinburg, 620049; Ekaterinburg, 620002
S. Titova
Yeltsin Ural Federal University; Institute of Metallurgy, Ural Branch, Russian Academy of Sciences
Email: shabashov@imp.uran.ru
Rússia, Ekaterinburg, 620002; Ekaterinburg, 620016
V. Voronin
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: shabashov@imp.uran.ru
Rússia, Ekaterinburg, 620108