Accounting for phase transformations during welding of ferritic steels

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dc.contributor.authorHamelin, CJen_AU
dc.contributor.authorMuránsky, Oen_AU
dc.contributor.authorLuzin, Ven_AU
dc.contributor.authorBendeich, PJen_AU
dc.contributor.authorEdwards, Len_AU
dc.date.accessioned2025-02-14T02:39:35Zen_AU
dc.date.available2025-02-14T02:39:35Zen_AU
dc.date.issued2012en_AU
dc.date.statistics2025-02-14en_AU
dc.description.abstractThe numerical application of solid-state phase transformation kinetics relating to conventional welding of ferritic steels is presented. The inclusion of such kinetics in weld models is shown to be necessary for capturing the post-weld residual stress field. To this end, a comparison of two approaches is outlined: a semi-empirical approach that uses thermodynamic transformation kinetics to predict phase morphology; and a fully empirical approach that directly links local material temperature to the present constituent phase(s). The semi-empirical analysis begins with prediction of TTT diagrams using thermodynamic principles for ferritic steels. The data is then converted to CCT diagrams using the Scheil-Avrami additive rule, including austenite grain growth kinetics. This information is used to predict the phases present under varying peak temperatures and cooling rates. In the fully empirical approach, dilatometric experiments of steel samples are performed during heating to simulate expected welding conditions. The constitutive response of the sample is then used as input for the subsequent numerical weld analyses. Input derived from each technique is transferred into weld models developed using the Abaqus finite element package. Model validation is carried out by direct comparison with neutron diffraction residual stress measurements on two beams of SA508 Gr.3 Cl.1 steel subjected to autogenous beam TIG welds under varying torch speeds, heat input and preheat conditions. © 2011 by ASMEen_AU
dc.identifier.booktitleProceedings of the ASME Pressure Vessels and Piping Conference--2011 : presented at ASME 2011 Pressure Vessels and Piping Conference, July 17-21, 2011, Baltimore, Maryland, USAen_AU
dc.identifier.citationHamelin, C. J., Muránsky, O., Luzin, V., Bendeich, P., & Edwards, L. (2012). Accounting for phase transformations during welding of ferritic steels. Paper presented to the ASME 2011 Pressure Vessels and Piping Conference July 17–21, 2011 Baltimore, Maryland, USA. In Proceedings of the ASME 2011 Pressure Vessels and Piping Conference: Volume 6: Materials and Fabrication, Parts A and B. Baltimore, Maryland, USA. July 17–21, 2011. (pp. 1469-1477). ASME. doi:10.1115/PVP2011-57426en_AU
dc.identifier.conferenceenddate2011-07-21en_AU
dc.identifier.conferencenameASME 2011 Pressure Vessels and Piping Conferenceen_AU
dc.identifier.conferenceplaceBaltimore, Maryland, USAen_AU
dc.identifier.conferencestartdate2011-07-17en_AU
dc.identifier.issn0277-027Xen_AU
dc.identifier.issueParts A and Ben_AU
dc.identifier.pagination1469-1477en_AU
dc.identifier.urihttps://doi.org/10.1115/pvp2011-57426en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15995en_AU
dc.identifier.volume6en_AU
dc.language.isoenen_AU
dc.publisherASME Internationalen_AU
dc.subjectMaterialsen_AU
dc.subjectFabricationen_AU
dc.subjectPhase transformationsen_AU
dc.subjectResidual stressesen_AU
dc.subjectFerritic Steelsen_AU
dc.subjectWeldingen_AU
dc.subjectFinite element methoden_AU
dc.subjectAccountingen_AU
dc.subjectKineticsen_AU
dc.subjectNeutron diffractionen_AU
dc.titleAccounting for phase transformations during welding of ferritic steelsen_AU
dc.typeConference Paperen_AU
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