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Pack cementation on t91 steel: Effracture surface analyses to understand the mechanical behaviour at 300°c in contact with lead-bismuth liquid metal

  • I. Proriol Serre
  • , I. Diop
  • , N. David
  • , M. Vilasi
  • , J. B. Vogt

Research output: Contribution to conferencePaperpeer-review

Abstract

Different coatings, deposited by pack cementation process, were developed to protect the T91 steel towards the dissolution by Lead Bismuth Eutectic (LBE: iron aluminide, iron boride and an iron solid solution enriched in chromium and covered by a chromium carbide. The mechanical behaviour of the T91 with the different coatings is studied in air and in LBE at 300°C by the use of the Small Punch Test (SPT. In SPT, specimens in the form of disk are punched in their middle by a ball. The fracture surfaces of the T91 steel and of the coatings are observed after test by scanning electron microscopy. The fracture of the interface between the steel and the coating appears as a key factor to understand the mechanical behaviour of the coated T91 steel in contact with the Lead-Bismuth Eutectic.

Original languageEnglish
Publication statusPublished - 1 Dec 2010
Externally publishedYes
Event18th European Conference on Fracture: Fracture of Materials and Structures from Micro to Macro Scale, ECF 2010 - Dresden, Germany
Duration: 30 Aug 20103 Sept 2010

Conference

Conference18th European Conference on Fracture: Fracture of Materials and Structures from Micro to Macro Scale, ECF 2010
Country/TerritoryGermany
CityDresden
Period30/08/103/09/10

Keywords

  • Fracture surface analysis
  • Liquid metal accelerated damage
  • SEM
  • Small Punch Test

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