Ferritic steels are developed economically alloyed with nickel (up to 7%) with increased strength and low-temperature toughness for the manufacture of liquefied natural gas (LNG) storage tanks. Results are provided for a study of the steel mechanical properties, cold resistance, and microstructure. It is shown that the achievement of a high level of cold resistance with a reduction in nickel content is possible by means of additional alloying with copper, microalloying with carbide-forming elements, and a change in heat treatment regime.
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Translated from Metallurg, Vol. 64, No. 2, pp. 31–35, February, 2020.
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Zikeev, V.N., Morozov, Y.D., Sharov, B.P. et al. Prospects for Producing Special Cold-Resistant Economically Alloyed Nickel Ferritic Steel for Liquefied Natural Gas Storage and Transportation Vessels. Metallurgist 64, 111–117 (2020). https://doi.org/10.1007/s11015-020-00972-3
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DOI: https://doi.org/10.1007/s11015-020-00972-3