Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/10418
Title: Assessment of residual stress, hardness, and defect tolerance in a tee joint, as-welded and after post-weld heat treatment
Authors: Law, M
Paradowska, AM
Hoye, N
Grace, P
Keywords: Cracks
Defects
Fractures
Hardness
Heat treatments
Residual stresses
Risk assessment
Welded joints
Issue Date: 1-Mar-2017
Publisher: Scientific Surveys Ltd
Citation: Law, M., Paradowska, A., Hoye, N., & Grace, P. (2017). Assessment of residual stress, hardness, and defect tolerance in a tee joint, as-welded and after post-weld heat treatment. Journal of Pipeline Engineering, 16(1), 27-32.
Abstract: The risk of hydrogen-assisted cold cracking (HACC) is often conflated with the risk of brittle fracture. However, if delayed non-destructive testing (NDT) shows there are no defects, or defects below the critical crack size, then brittle fracture is not possible. Post-weld heat treatment (PWHT) is known to reduce the risk of HACC but is not always possible to perform. To assess the effects of PWHT, the residual stresses and hardness values were measured before and after PWHT to assess the effects of PWHT on HACC susceptibility and on the critical defect sizes. The residual stresses were lower than code-based estimates. PWHT reduced the residual stress and hardness, and increased the critical crack size. Copyright Scientific Surveys Ltd
URI: https://apo.ansto.gov.au/dspace/handle/10238/10418
ISSN: 1753-2116
Appears in Collections:Journal Articles

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