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Effect of "475°C embrittlement" on the corrosion behaviour of grade 2205 duplex stainless steel investigated using local probing techniques

  • C. Örnek*
  • , D. L. Engelberg
  • , S. B. Lyon
  • , T. L. Ladwein
  • *Corresponding author for this work
  • University of Manchester
  • Aalen University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The work reported in this paper correlates microstructure development after low temperature embrittlement heat treatments with pitting corrosion susceptibility in grade 2205 duplex stainless steel. Heat-treatments at 475°C for up to 255 hours were carried out and microstructures characterised using scanning electron microscopy (SEM) and micro-hardness testing. Local electrochemical measurements using an electrochemical micro-cell were carried out and the critical pitting temperature (cPT) determined. Short-duration heat treatments for up to 10 hours showed an increase in CPT, attributed to an improved electrochemical character of the ferrite. Long-term heat treatments (>50 hours) indicated a decrease in CPT due to the precipitation of other precipitates and the formation of elemental depletion zones.

Original languageEnglish
Title of host publicationEUROCORR 2013 - European Corrosion Congress
Publication statusPublished - 2013
Externally publishedYes
EventEuropean Corrosion Congress, EUROCORR 2013 - Estoril, Portugal
Duration: 1 Sept 20135 Sept 2013

Publication series

NameEUROCORR 2013 - European Corrosion Congress

Conference

ConferenceEuropean Corrosion Congress, EUROCORR 2013
Country/TerritoryPortugal
CityEstoril
Period1/09/135/09/13

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