Creep damage modelling of a P92 pipe weld at 675°C

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

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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
Title of host publication4th International Conference on the Integrity of High Temperature Welds
Place of PublicationLondon, UK
PublisherIOM
Publication statusPublished - 2012
Event4th International Conference on the Integrity of High Temperature Welds - London, United Kingdom
Duration: 25 Sep 201227 Sep 2012

Conference

Conference4th International Conference on the Integrity of High Temperature Welds
CountryUnited Kingdom
CityLondon
Period25/09/1227/09/12

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