Residual stress measurements of lean duplex stainless steel welded sections

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dc.contributor.authorLi, DXen_AU
dc.contributor.authorParadowska, AMen_AU
dc.contributor.authorUy, Ben_AU
dc.contributor.authorWang, Jen_AU
dc.contributor.authorProust, Gen_AU
dc.contributor.authorAzad, SKen_AU
dc.contributor.authorHuang, YRen_AU
dc.date.accessioned2021-08-11T04:46:53Zen_AU
dc.date.available2021-08-11T04:46:53Zen_AU
dc.date.issued2021-08-08en_AU
dc.date.statistics2021-08-11en_AU
dc.description.abstractLean duplex stainless steel (LDSS) has been increasingly utilised in engineering applications due to its excellent durability, corrosion resistance, as well as superior structural and economic benefits. Moreover, compared to cold-form sections, welded members have significant structural advantages, and thus, have been widely used in many engineering practices. However, as one of the key factors affecting the performance of structural components, residual stresses of LDSS welded sections have not been sufficiently investigated. Therefore, square and H-shaped LDSS welded sections were considered in the present experimental programme. Accurate measurements of the tensile and compressive residual stresses were conducted through the non-destructive neutron diffraction method. As LDSS is a dual-phase material, neutron diffraction measurement was repeated twice for each specimen to obtain the individual phase residual stresses (ferrite-phase, α and austenite-phase, γ). Hardness analysis, as well as microstructural characterisation using optical microscopy and electron backscatter diffraction (EBSD) were thereafter performed to ascertain the volume fraction of each phase, based on which the residual stresses along the direction of interest were successfully converted. According to the obtained experimental results, the authors recommended analytical models for the LDSS fabricated square sections and proposed new models for the H-sections, through which the residual stress distributions for welded LDSS sections can be accurately predicted. In addition, the recommended/proposed analytical models for LDSS sections were further compared with their counterparts previously developed for high-strength steel (HSS) and ultra-high-strength steel (UHSS) welded sections. © 2021 Elsevier Ltden_AU
dc.identifier.articlenumber106883en_AU
dc.identifier.citationLi, D., Paradowska, A., Uy, B., Wang, J., Proust, G., Azad, S. K., & Huang, Y. (2021). Residual stress measurements of lean duplex stainless steel welded sections. Journal of Constructional Steel Research, 186, 106883. doi:10.1016/j.jcsr.2021.106883en_AU
dc.identifier.issn0143-974Xen_AU
dc.identifier.journaltitleJournal of Constructional Steel Researchen_AU
dc.identifier.urihttps://doi.org/10.1016/j.jcsr.2021.106883en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11323en_AU
dc.identifier.volume186en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectResidual stressesen_AU
dc.subjectHardnessen_AU
dc.subjectWelded jointsen_AU
dc.subjectWeldingen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectOptical spectrometersen_AU
dc.titleResidual stress measurements of lean duplex stainless steel welded sectionsen_AU
dc.typeJournal Articleen_AU
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