The Effect of Thermal Cycling on Steam Oxidation Behaviour of TP347H FG at 650°C

Rebecca-Louise Mobbs, Steve Osgerby, Mary Taylor, Hugh Evans

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Abstract

The cyclic oxidation behaviour of fine-grained type 347 stainless steel (TP347H FG) at 650 °C in air saturated steam and deoxygenated steam environments for 100-1000 hours has been investigated. Electron microscopy, energy dispersive and wavelength dispersive X-ray Spectroscopy (EDS and WDS, respectively) have been used to characterise the samples. Short term oxidation tests have shown only haematite spallation occurs whereas longer term tests have shown magnetite also spalls on cooling to room temperature. In all cases cyclic oxidation showed spallation does not occur after long term tests and is only visible in small amounts after short term tests subsequent to the initial spallation event.
Original languageEnglish
Pages (from-to)291-298
JournalMaterials at High Temperatures
Volume35
Issue number1-3
Early online date19 Oct 2017
DOIs
Publication statusPublished - 1 Mar 2018

Keywords

  • Steam oxidation
  • Spallation
  • TP347H FG
  • Austenitic Stainless Steel

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