High temperature oxidation in the context of life assessment and mcirostructural degradation of weldments of 2.25Cr-1Mo steel

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Abstract

The prevalence of in-service failures in the welds of chromium-molybdenum ferritic steels causes great concern in steam generating/handling systems of power plants, and components of petroleum/petrochemical industries. This paper is a review of the non-uniform scaling behaviour across microstructural gradients in weldments of pressure vessel steels in order to develop a global model for life-assessment by relating oxide scale thickness with time-temperature history of in-service components. The paper also investigates gaseous corrosion-assisted deterioration of the weldment microstructure.

Original languageEnglish
Pages (from-to)585-590
Number of pages6
JournalInternational Journal of Pressure Vessels and Piping
Volume79
Issue number8-10
DOIs
Publication statusPublished - 1 Aug 2002

Keywords

  • 2.25%Cr-1%Mo steels
  • Life assessment
  • Oxide scales
  • Steam environment

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