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Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/4764

Title: Neutron diffraction residual stress measurements on girth-welded 304 stainless steel pipes with weld metal deposited up to half and full pipe wall thickness
Authors: Haigh, RD
Hutchings, MT
James, JA
Ganguly, S
Mizuno, R
Ogawa, K
Okido, S
Paradowska, AM
Fitzpatrick, ME
Keywords: RESIDUAL STRESSES
WELDING
NEUTRON DIFFRACTION
STRESSES
METALS
STAINLESS STEELS
Issue Date: 1-Jan-2013
Publisher: Elsevier
Citation: Haigh, R. D., Hutchings, M. T., James, J. A., Ganguly, S., Mizuno, R., Ogawa, K., Okido, S., Paradowska, A. M., & Fitzpatrick, M. E. (2013). Neutron diffraction residual stress measurements on girth-welded 304 stainless steel pipes with weld metal deposited up to half and full pipe wall thickness. International Journal of Pressure Vessels and Piping, 101, 1-11.
Abstract: The residual stress distribution has been measured in two girth-welded austenitic stainless steel pipe weldments using time-of-flight neutron diffraction. One had weld filler metal deposited up to half the pipe wall thickness, and one had weld metal deposited up to full pipe wall thickness. The aim of the work is to evaluate the evolution in residual stress profile on filling the weld, on which there is little experimental data, and where the selection of the correct hardening model used in finite element modelling can benefit greatly from an understanding of the intermediate residual stresses partway through the welding operation. The measured residual stresses are compared with those calculated by finite element modelling and measured using X-ray diffraction. The results show a change in the measured hoop stress at the weld toe from tension to compression between the half- and fully-filled weld. The finite element results show an overprediction of the residual stress, which may be a consequence of the simple isotropic hardening model applied. The results have implications for the likely occurrence of stress corrosion cracking in this important type of pipe-to-pipe weldment.© 2013, Elsevier Ltd.
URI: http://dx.doi.org/10.1016/j.ijpvp.2012.08.003
http://apo.ansto.gov.au/dspace/handle/10238/4764
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