Pit initiation on sensitized Type 304 stainless steel under applied stress: Correlation of stress, Cr-depletion, and inclusion dissolution

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The effects of applied stress on the pitting of sensitized Type 304 stainless steel were investigated in 4 M MgCl2 immersion test. Regardless of whether stress was applied, pitting was initiated at inclusions at sensitized grain boundaries. In the absence of applied stress, the occurrence of pitting decreased when the area exposed to the solution decreased, and not all the inclusions acted as initiation sites. However, pitting was observed independent of the exposed area under applied stress. The dissolution rates of MnS inclusions and sensitized grain boundaries were accelerated by applied stress.

Original languageEnglish
Article number108506
JournalCorrosion Science
Volume167
DOIs
Publication statusPublished - 2020 May 1

Keywords

  • Applied stress
  • Pitting corrosion
  • Sensitization
  • Stainless steel
  • Sulfide inclusion

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

Fingerprint Dive into the research topics of 'Pit initiation on sensitized Type 304 stainless steel under applied stress: Correlation of stress, Cr-depletion, and inclusion dissolution'. Together they form a unique fingerprint.

Cite this