Electrochemical aspects of stress-corrosion cracking of sensitised stainless steels

R. C. Newman, K. Sieradzki

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

The intergranular stress-corrosion cracking (SCC) of sensitised Type 304 stainless steel has been studied using sodium thiosulphate solutions at room temperature. Electrochemical aspects of the cracking have been examined using a potentiostatic scratching electrode technique applied to simulated grain boundary alloys. These results are compared with the current transients observed after intergranular fracture of embrittled specimens under the electrolyte. Dissolution kinetics within actual propagating cracks have been examined using load modulation. Rapid intergranular failure in a thiosulphate solution can be induced by successive load pulses of extremely short duration. Difficulties in accounting for the SCC velocities by an electrochemical mechanism are discussed.

Original languageEnglish (US)
Pages (from-to)363-378
Number of pages16
JournalCorrosion Science
Volume23
Issue number4
DOIs
StatePublished - 1983
Externally publishedYes

ASJC Scopus subject areas

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

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