Neutron and synchrotron diffraction measurements of residual stress in steel weldments

Anna Maria Paradowska, John William Howard Price, Raafat Nasr Ibrahim

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

This paper explores the use of state-of-the-art instruments such as neutron and synchrotron diffraction for evaluation of residual stress in carbon steel welded components. The study shows significant variation in transverse residual strain/stress distribution across the length of the weld. Measurements before and after post weld heat treatment are reported together with traditional mechanical tests. The changes in residual stress distribution as weld beads are added in multi-bead welds are also presented. Important practical results are: i) The start and end of the weld are the most critical parts of the weldment. Implementations of run-in and run-out (which are subsequently ground off) can minimize the residual stress at the start and end of the weld. ii) Manipulation of the sequence especially around the weld toes can minimize the value of the residual stress in that region. iii) Post weld heat treatment is very effective at reducing residual stresses.

Original languageEnglish
Title of host publicationProceedings of 2007 ASME Pressure Vessels and Piping Division Conference
EditorsArtin A Dermenjian
Place of PublicationUSA
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages243-252
Number of pages10
ISBN (Print)0791842835, 9780791842836
DOIs
Publication statusPublished - 19 May 2008
EventASME Pressure Vessels and Piping Conference (PVP) 2007 - San Antonio Hyatt, San Antonio, United States of America
Duration: 22 Jul 200726 Jul 2007
https://asmedigitalcollection.asme.org/PVP/PVP2007/volume/42797 (Proceedings)

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume5
ISSN (Print)0277-027X

Conference

ConferenceASME Pressure Vessels and Piping Conference (PVP) 2007
Abbreviated titlePVP 2007
CountryUnited States of America
CitySan Antonio
Period22/07/0726/07/07
Other2007 ASME Pressure Vessels & Piping Conference
Internet address

Keywords

  • Beds-on-plate
  • Neutron diffraction
  • Post-weld heat treatment
  • Residual stress
  • Synchrotron diffraction
  • Welding

Cite this