Influence of Plastic Deformation on Dissolution Corrosion of Type 316L Austenitic Stainless Steel in Static, Oxygen-Poor Liquid Lead-Bismuth Eutectic at 500°C

Research output: Contribution to journalArticle

Authors

Institutes & Expert groups

  • KUL - Katholieke Universiteit Leuven
  • VUB - Vrije Universiteit Brussel

Documents & links

DOI

Abstract

This study addresses the effect of plastic deformation on the dissolution corrosion behavior of a Type 316L austenitic stainless steel. Dissolution corrosion was promoted by low oxygen conditions in liquid lead-bismuth eutectic (LBE). Specimens with controlled degree of plastic deformation (20%, 40%, and 60%) and a non-deformed, solution-annealed specimen were simultaneouslyexposedfor1,000hat500°CtostaticLBEwithlow oxygen concentration ([O] <10−11 mass%). The corroded specimens were analyzed by various material characterization techniques. All exposed specimens exhibited dissolution corrosion. The non-deformed steel showed the least dissolution attack (maximum depth: 36 μm), while the severity of attack increased with the degree of steel deformation (maximum depth in the 60% steel: 96 μm). It was, thus, concluded that increasing the amount of plastic deformation in a Type 316L stainless steel results in higher dissolution corrosion damages forsteelsexposedtolowoxygenLBEconditions.Additionally, it was observed that the presence of chemical bands and δ-ferriteinclusionsinaType316Lsteelaffecteditsdissolution corrosion behavior.

Details

Original languageEnglish
Pages (from-to)1078-1090
JournalCorrosion
Volume73
Issue number9
DOIs
Publication statusPublished - 1 Apr 2017

Keywords

  • LBE, liquid metal corrosion, deformation, MYRRHA

ID: 5655833