Creep damage modelling of P92 pipe weld at 675°C

David W J Tanner, M. Puliyaneth, W. Sun, T. H. Hyde

Research output: Contribution to journalArticle (Academic Journal)peer-review

5 Citations (Scopus)

Abstract

Creep data from ferritic steel P92 parent material, weld metal, cross-weld and heat affected zone specimens tested at 675°C are used to establish material behaviour models necessary for describing the creep behaviour of a P92 pipe with a circumferential weld. The method for determining the material properties for the heat affected zone of a P92 weld, in a single state variable creep damage constitutive model, using the data from cross-weld and impression creep tests, is described. The material properties for the parent material and weld metal regions have been already been published. Creep continuum damage finite element analyses are subsequently performed for a P92 pipe containing a circumferential weld, subjected to internal pressure and end loading, in order to assess the high temperature integrity and failure behaviour of a typical power plant component, from which the lifetime and potential failure modes can be predicted.
Original languageEnglish
Pages (from-to)6-11
JournalMaterials Science and Technology
Volume30
Issue number1
Early online date18 Apr 2013
DOIs
Publication statusPublished - 2014

Keywords

  • Type IV; Creep; Damage; Material properties; P92 weld; Pipe failure prediction

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