In-Situ Residual Stress Measurement by Neutron Diffraction in Cold Weld Repair Tubular Joints Made of T91

DOI

Grade 91 pipes and tubes have become a standard material for the design of new and refurbishment of existing Power Plants. Several major failures have been encountered after fabrication of these new steels and are mainly attributable to improper practices. Gas backing and the required PWHT are a time consuming factor. In a collaborative research program, the BWI and Laborelec undertook the challenge to investigate the feasibility of a Cold Weld Repair (CWR) methodology in order to weld repair T91 tubes without the use of gas backing and PWHT. The study so far demonstrated that a repair method based on the selection of an undermatched consumable and a controlled deposition procedure can result in acceptable properties. In this research we would like to investigate the residual stress relaxation in the CWR during in-situ experiment in order to further optimize the welding ability of T91.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24088590
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24088590
Provenance
Creator Dr Ania Paradowska; Dr Frederic Vanderlinden; Dr Staf Huysmans; Dr Sanjooram Paddea; Miss Anusha Kankanala; Dr Mike Dodge
Publisher ISIS Neutron and Muon Source
Publication Year 2015
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2012-03-20T01:09:54Z
Temporal Coverage End 2012-03-24T12:49:04Z