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Residual stress characterization of single and triple-pass autogenously welded stainless steel pipes

Haigh, R.D.; Hutchings, Michael; Fitzpatrick, M.E..; James, J.A.; Okido, S.; Mizuno, R.; Ogawa, K. and Hughes, D.J. (2016). Residual stress characterization of single and triple-pass autogenously welded stainless steel pipes. International Journal of Pressure Vessels and Piping, 144 pp. 1–10.

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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 Item
Copyright Holders: 2016 Elsevier Ltd.
ISSN: 0308-0161
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetLloyd’s Register Foundation
Keywords: Autogenous welds; Residual stress; Neutron diffraction
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 53871
Depositing User: ORO Import
Date Deposited: 16 Mar 2018 09:39
Last Modified: 11 Oct 2019 14:17
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