High-Temperature Heat-Treatment at 1673K: Improvement of Pitting Corrosion Resistance at Inclusions of Type 304 Stainless Steel under Applied Stress

Shimpei Tokuda, Izumi Muto, Yu Sugawara, Nobuyoshi Hara

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5 Citations (Scopus)

Abstract

MnS inclusions in Type 304 stainless steel were mainly transformed into oxide/oxysulfide inclusions by heat-treatment at 1673 K. In 0.1 M MgCl2 under both the no-stress and stress conditions, the pitting potential of the steel heat-treated at 1673 K was higher than the steel heat-treated at 1373 K. The pitting potential of the stainless steel heat-treated at 1673 K did not decrease due to applied stress. For the steel heat-treated at 1673 K, the dissolution current of oxide/oxysulfide inclusions was lower than that at MnS inclusions. The results show no significant decrease in the pitting potential of the steel heat-treated at 1673K even under applied stress.

Original languageEnglish
Pages (from-to)265-268
Number of pages4
JournalMaterials Transactions
Volume63
Issue number2
DOIs
Publication statusPublished - 2022

Keywords

  • Applied stress
  • Oxysulfide
  • Pitting corrosion
  • Stainless steel
  • Sulfide

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