Haigh, R. D., Hutchings, M. T., Fitzpatrick, M. E., James, J. A., Okido, S., Mizuno, R., Ogawa, K. and Hughes, Darren J. (2016) Residual stress characterization of single and triple-pass autogenously welded stainless steel pipes. International Journal of Pressure Vessels and Piping, 144 . doi:10.1016/j.ijpvp.2016.05.003

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Abstract

Using neutron diffraction the components of the residual stress field have been determined in the region near a mid-length groove in two identical austenitic stainless pipes in which weld beads had been laid down. One pipe sample had a single pass, and the second a triple pass, autogenous weld deposited around the groove circumference. The results show the effect on the stress field of the additional weld deposited and are compared to the results of Finite Element Modelling. The hoop stress component is found to be generally tensile, and greater in the triple pass weldment than in the single pass weldment. The hoop stresses reach peak values of around 400 MPa in tension. X-ray measurements of the residual stress components on the near inner surface of the pipe weldments are also presented, and show tensile stresses in both pipes, with a higher magnitude in the three-pass weldment.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TN Mining engineering. Metallurgy
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH):	Austenitic stainless steel -- Welding, Welded joints -- Testing
Journal or Publication Title:	International Journal of Pressure Vessels and Piping
Publisher:	Elsevier Ltd
ISSN:	0308-0161
Official Date:	August 2016
Dates:	Date Event August 2016 Published 24 May 2016 Available 22 May 2016 Accepted 10 July 2014 Submitted
Volume:	144
DOI:	10.1016/j.ijpvp.2016.05.003
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Japan. Genshiryoku Anzen Kiban Kikō‏ [Japan Nuclear Energy Safety] (JNES), Lloyd's Register Foundation

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