Influence of tensile pre-strain and sensitization on passive films in AISI 304 austenitic stainless steel

L. V. Jin-Long, Luo Hong-Yun

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The degree of sensitization for tensile pre-strain (0%, 10%, 20%, 30%, 40%) of AISI 304 stainless steels and sensitization at 575°C was investigated by the double loop electrochemical potentiokinetic reactivation technique and scanning electron microscopes (SEMs). The properties of passive films of all the sensitized specimens in borate buffer solution (pH = 9.2) with 5000 ppm Cl - were investigated by the Mott-Schottky analysis. The degree of sensitization results showed that two reactivation current peak values were obtained for the sensitized specimens after 30% and 40% pre-strain. The degree of sensitization was decreased by pre-strain, except for specimen with 10% pre-strain. The results were further confirmed by the Mott-Schottky analysis.

Original languageEnglish
Pages (from-to)973-978
Number of pages6
JournalMaterials Chemistry and Physics
Volume135
Issue number2-3
DOIs
Publication statusPublished - 2012 Aug 15

Keywords

  • AISI 304 stainless steel
  • Degree of sensitization
  • Strain-induced martensite
  • Tensile pre-strain

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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