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Type: Journal article
Title: Inclined stress corrosion cracks in gas pipeline steels: morphology and implications
Author: Zadow, L.
Gamboa, E.
Lavigne, O.
Citation: Materials and Corrosion, 2015; 66(10):1092-1100
Publisher: Wiley
Issue Date: 2015
ISSN: 0947-5117
Statement of
L. Zadow, E. Gamboa and O. Lavigne
Abstract: A systematic morphological survey was carried out on, stress corrosion cracks, SCC, from an ex service X, Australian gas pipeline. Out of these cracks, showed a tendency to grow into the material away from the perpendicular. The inclined crack path was suggested to be due to anisotropic residual stress, strains present in the material introduced during pipe manufacturing processes. The overall depth of inclined SCC cracks was found to follow a logarithmic relationship to the SCC surface crack length. Hoop travel was defined as the distance that the crack tip travels in the pipe hoop direction as it grows into the material. The specific hoop travel distance was found to follow a linear relationship as a function of the SCC surface crack length. The relationships between surface crack length to through-wall crack depth and hoop travel could allow pipe operators to formulate a worst case scenario for the purposes of SCC assessment and management.
Rights: © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
DOI: 10.1002/maco.201407896
Appears in Collections:Aurora harvest 3
Mechanical Engineering publications

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