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Residual Stress Measurements in Autogenous SA508 Steel Welds

[+] Author Affiliations
J. A. Francis, M. Turski, P. J. Withers

University of Manchester, Manchester, UK

Paper No. PVP2008-61469, pp. 459-466; 8 pages
  • ASME 2008 Pressure Vessels and Piping Conference
  • Volume 6: Materials and Fabrication, Parts A and B
  • Chicago, Illinois, USA, July 27–31, 2008
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4829-6
  • Copyright © 2008 by ASME


Engineering integrity assessments for power plant components need to account for the primary loads that arise during service as well as any residual stresses that may be associated with materials processing or fabrication. Welding operations come under particular scrutiny because they introduce substantial residual stresses. These stresses, however, are often either difficult or impractical to measure, so a heavy reliance is placed on obtaining estimates from numerical models. In ferritic steels, the prediction of weld residual stresses is particularly challenging, owing to the solid-state phase transformations that occur upon heating and cooling. Thus there is a great need to validate modeling strategies by comparing predicted stresses with those that are measured on well-defined test cases. In this article, we present the results of neutron diffraction measurements for two configurations that may serve as suitable test cases for weld models; an autogenous edge-welded beam and an autogenous bead on a plate.

Copyright © 2008 by ASME



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