Influence of tensile pre-strain and sensitization on martensite reversion mechanism in austenitic stainless steel

Lv Jinlong, Luo Hongyun

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The martensitic phase transformation and reverse transformation of AISI 304 austenitic stainless steel by tensile pre-strain and sensitization at 948 K were investigated by X-ray diffraction. Martensite reversion was found to occur by an athermal shear mechanism at this temperature. A small quantity of "supposed secondary α′-martensite" was generated in a specimen suffering 40% engineering strain after being sensitized for a long time and water quenched. This could be due to the redistribution of carbon and chromium in the reverted austenitic phase and dislocations, which promoted the nucleation of the martensitic transformation.

Original languageEnglish
Pages (from-to)10-14
Number of pages5
JournalMaterials Characterization
Volume77
DOIs
Publication statusPublished - 2013 Feb 1

Keywords

  • Carbides
  • Keywords
  • Martensitic phase transformation
  • Quenching
  • Sensitization
  • X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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