The Low-Nickel Cryogenic Steel Alloyed by Nitrogen

Anatoly G. Svyazhin; Ludmila M. Kaputkina; Inga V. Smarygina

doi:10.4028/www.scientific.net/MSF.879.1899

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HomeMaterials Science ForumMaterials Science Forum Vol. 879The Low-Nickel Cryogenic Steel Alloyed by Nitrogen

The Low-Nickel Cryogenic Steel Alloyed by Nitrogen

Abstract:

New low-nickel Cr18Ni5Mn9Mo2N and Cr19Ni6Mn10Mo2N steels can be used up to-170 °C and differs in the highest level of durabilities in the hot-rolled and tempered from austenitic area state that provides its effective application in climatic conditions of the Arctic and Antarctic. Excess of durability over level, characteristic for traditional stainless steel of the Cr18Ni9 type, is provided due to additional solid solution hardening. Alloying with nitrogen to 0,18÷0,22% usual Cr18Ni9 steel has the smaller, but also high level of mechanical properties, differs in smaller thermal and mechanical stability of austenite and can be applied in less rigid on temperature and loadings service conditions. Corrosion resistance of austenitic stable steels free from contaminations is also higher compared to steel with regular cleanliness.

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Periodical:

Materials Science Forum (Volume 879)

Pages:

1899-1904

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.879.1899

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Online since:

November 2016

Authors:

Anatoly G. Svyazhin*, Ludmila M. Kaputkina, Inga V. Smarygina

Keywords:

Low-Nickel Nitrogen Steel, Phase Diagram, Properties, Structure, Treatment

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