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Measurement of Residual Stresses in Thick Section Steel Electron Beam Welds

[+] Author Affiliations
E. Kingston

Veqter Ltd., Bristol, UK

D. J. Smith, G. Zheng

University of Bristol, Bristol, UK

C. Gill, P. Hurrell

Rolls-Royce Marine, Derby, UK

Paper No. PVP2010-25314, pp. 1307-1316; 10 pages
doi:10.1115/PVP2010-25314
From:
  • ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
  • ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B
  • Bellevue, Washington, USA, July 18–22, 2010
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-49255 | eISBN: 978-0-7918-3878-5
  • Copyright © 2010 by Rolls-Royce plc

abstract

Residual stresses were measured and predicted in steel electron beam welded samples, one supplied by Rolls-Royce, UK, and a second by CEA, France. In the case of the Rolls-Royce sample, measurements were made before and after post-weld heat treatment. The deep hole drilling technique was applied to obtain measurements across and through the EB welds. It is shown that the tensile residual stresses are confined to a region either side of the EB weld that corresponds to about 20% of the wall thickness. Post-weld heat treatment is shown to substantially reduce the magnitudes of the peak residual stresses. Comparisons between measurements and predicted residual stresses in the Rolls-Royce sample show that predicted hoop stresses are substantially greater than measured although there is a fair comparison between measured and predicted radial stresses.

Copyright © 2010 by Rolls-Royce plc

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