Nitriding of Molten Chromium-Manganese Steels
- Authors: Smirnov L.A.1, Zayakin O.V.1, Zhuchkov V.I.1, Oryshchenko A.S.2, Kalinin G.Y.2, Shul’min D.S.3
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Affiliations:
- Institute of Metallurgy, Ural Section, Russian Academy of Sciences
- NITs Kurchatov Institute, TsNII KM Prometei
- OAO Ural Institute of Metals
- Issue: Vol 63, No 7-8 (2019)
- Pages: 785-791
- Section: Article
- URL: https://journal-vniispk.ru/0026-0894/article/view/243061
- DOI: https://doi.org/10.1007/s11015-019-00890-z
- ID: 243061
Cite item
Abstract
Theoretical and experimental studies are conducted in the field of nitriding high strength nonmagnetic steels. Temperature-time correlation of the degree nitrogen assimilation and nitrogen content in steel 04Cr20Ni6Mn11Mo2NVNb in the case of alloying with nitrogencontaining manganese and chromium ferroalloys in air and during purging with nitrogen are determined by experiment. Gas phase nitriding of this steel is possible at 1450 °C during 30 min reaching a nitrogen content of 0.42%. A twostage process for lowcost nitriding is developed. In the first stage melts are purged with highpurity nitrogen to reach a nitrogen content of 0.25–0.30%. In the second stage powder alloying additions are injected into a stream of nitrogen with a melt temperature as low as possible.
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About the authors
L. A. Smirnov
Institute of Metallurgy, Ural Section, Russian Academy of Sciences
Author for correspondence.
Email: sekretar@uim-stavan.ru
Russian Federation, Ekaterinburg
O. V. Zayakin
Institute of Metallurgy, Ural Section, Russian Academy of Sciences
Email: sekretar@uim-stavan.ru
Russian Federation, Ekaterinburg
V. I. Zhuchkov
Institute of Metallurgy, Ural Section, Russian Academy of Sciences
Email: sekretar@uim-stavan.ru
Russian Federation, Ekaterinburg
A. S. Oryshchenko
NITs Kurchatov Institute, TsNII KM Prometei
Email: sekretar@uim-stavan.ru
Russian Federation, St. Petersburg
G. Yu. Kalinin
NITs Kurchatov Institute, TsNII KM Prometei
Email: sekretar@uim-stavan.ru
Russian Federation, St. Petersburg
D. S. Shul’min
OAO Ural Institute of Metals
Email: sekretar@uim-stavan.ru
Russian Federation, Ekaterinburg
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