Investigation of Pitting Corrosion in Sensitized Modified High-Nitrogen 316LN Steel After Neutron Irradiation

Author(s)
Merezhko, D. A.; Merezhko, M. S.; Gussev, M. N.; Busby, J. T.; Maksimkin, O. P.; ... Show more
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Abstract
The influence has been studied of thermo-mechanical treatment, sensitization conditions, and neutron irradiation on the pitting corrosion resistance of austenitic 316LN stainless steel variants in 10% FeCl[subscript 3]·6H[subscript 2]O at 22 °C. Variants of this steel were modified with additions of nitrogen, manganese, copper, and tungsten, as well as testing cast, cold-rolled, grain boundary engineered (GBE), and as-received variants. It was found that the 316LN steel variant with additions of 0.2% N and 2% Mn had the best pitting corrosion resistance of all studied conditions. When irradiated in a light water reactor (LWR) to a maximum fluence of 3 × 1017 n/cm[superscript 2] (E > 1.1 meV, Tirr < 50 °C), neutron irradiation surprisingly increased the resistance of GBE steels to pitting corrosion. An anisotropy of corrosion resistance of GBE and cold rolled steels was observed. Keywords: Austenitic stainless steel, Alloying, Nitrogen, Tungsten, Copper, Sensitization, Pitting corrosion, Grain boundary engineering
Date issued
2017-10
URI
http://hdl.handle.net/1721.1/118600
Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Journal
Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors
Publisher
Springer International Publishing
Citation
Merezhko, D. A., et al. “Investigation of Pitting Corrosion in Sensitized Modified High-Nitrogen 316LN Steel After Neutron Irradiation.” Proceedings of the 18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors, 13-17 August, 2017, Portland, Oregaon, edited by John H Jackson et al., Springer International Publishing, 2018, pp. 1125–40.
Version: Author's final manuscript
ISBN
978-3-319-67243-4
978-3-319-67244-1
ISSN
2367-1181
2367-1696
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