Nitrogen alloying of the 12% Cr martensitic-ferritic steel
- Authors: Kudryavtsev A.S.1, Artem’eva D.A.1, Mikhailov M.S.1
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Affiliations:
- Central Research Institute of Structural Materials Prometey
- Issue: Vol 118, No 8 (2017)
- Pages: 788-794
- Section: Strength and Plasticity
- URL: https://journals.rcsi.science/0031-918X/article/view/167174
- DOI: https://doi.org/10.1134/S0031918X17080087
- ID: 167174
Cite item
Abstract
The influence of the nitrogen content on the structure and mechanical properties of heat and corrosion resistant 12% Cr martensitic-ferritic steel developed at the Central Research Institute of Structural Materials Prometey has been studied. Steel containing 0.061 wt % nitrogen possesses a high level of mechanical properties. The decrease in the nitrogen content to 0.017 wt % leads to an increase of structurally free ferrite fraction in the steel, a decrease in the density of dislocations, a decrease of structural dispersity and the absence of finely dispersed precipitates of niobium and vanadium nitrides and carbides. As a result, there is a decrease in the strength properties, especially in the heat resistance.
About the authors
A. S. Kudryavtsev
Central Research Institute of Structural Materials Prometey
Author for correspondence.
Email: kudryavtsev@yandex.ru
Russian Federation, ul. Shpalernaya 49, St. Petersburg, 191015
D. A. Artem’eva
Central Research Institute of Structural Materials Prometey
Email: kudryavtsev@yandex.ru
Russian Federation, ul. Shpalernaya 49, St. Petersburg, 191015
M. S. Mikhailov
Central Research Institute of Structural Materials Prometey
Email: kudryavtsev@yandex.ru
Russian Federation, ul. Shpalernaya 49, St. Petersburg, 191015