Investigation of pitting corrosion in sensitized modified high-nitrogen 316LN steel after neutron irradiation

D. A. Merezhko, M. S. Merezhko, M. N. Gussev, J. T. Busby, O. P. Maksimkin, M. P. Short, F. A. Garner

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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 3 ·6H 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 × 10 17 n/cm 2 (E > 1.1 meV, T irr < 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.

Original languageEnglish
Title of host publicationMinerals, Metals and Materials Series
PublisherSpringer International Publishing
Pages1125-1140
Number of pages16
ISBN (Print)9783030046385, 9783030046392, 9783319515403, 9783319651354, 9783319728520, 9783319950211
DOIs
StatePublished - 2019
Event18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019 - Boston, United States
Duration: Aug 18 2019Aug 22 2019

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference18th International Conference on Environmental Degradation of Materials in Nuclear Power Systems – Water Reactors 2019
Country/TerritoryUnited States
CityBoston
Period08/18/1908/22/19

Keywords

  • Alloying
  • Austenitic stainless steel
  • Copper
  • Grain boundary engineering
  • Nitrogen
  • Pitting corrosion
  • Sensitization
  • Tungsten

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