Electron beam weld modelling of ferritic steel: effect of prior-austenite grain size on transformation kinetics

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dc.contributor.authorVasileiou, ANen_AU
dc.contributor.authorHamelin, CJen_AU
dc.contributor.authorSmith, MCen_AU
dc.contributor.authorFrancis, JAen_AU
dc.contributor.authorSun, YLen_AU
dc.contributor.authorFlint, TFen_AU
dc.contributor.authorXiong, Qen_AU
dc.contributor.authorAkrivos, Ven_AU
dc.date.accessioned2023-01-27T01:08:17Zen_AU
dc.date.available2023-01-27T01:08:17Zen_AU
dc.date.issued2020-11-19en_AU
dc.date.statistics2023-01-19en_AU
dc.description.abstractFerritic steels experience solid-state phase transformation (SSPT), which causes volumetric changes due to differences in the atomic packing density of different phases in the steel. The importance of the prior austenite grain size (PAGS) as an input physical variable is assessed, for adequately modelling the anisothermal SSPT during welding of ferritic steels. The knowledge of the PAGS value pre-requires a thorough microstructural study of each particular weld, information that might be difficult to acquire. A relationship between hardness, PAGS and phase fractions is proposed to be used to feed in weld models. The case of a single-pass, autogenous, reduced-pressure electron beam weld is used for this study. The adequacy of the finite-element weld model in predicting the micro-constituents, the hardness and the residual stress is demonstrated via comparing the predicted results of the thermo-metallurgical and stress analyses with the set of corresponding experimental data. This work aims at providing a better understanding of the impact of PAGS on transformation kinetics and best practice guidelines for modelling, using an extensively validated electron beam weld model as baseline. © 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND licenseen_AU
dc.identifier.citationVasileiou, A. N., Hamelin, C. J., Smith, M. C., Francis, J. A., Sun, Y. L., Flint, T. F., Xiong, Q., & Akrivos, V. (2020). Electron beam weld modelling of ferritic steel: effect of prior-austenite grain size on transformation kinetics. Paper presented at the 30th International Conference on Flexible Automation and Intelligent Manufacturing (FAIM2021), Athens, Greece, 15–18 June 2020. In Procedia Manufacturing, 51, 842-847. doi:10.1016/j.promfg.2020.10.118en_AU
dc.identifier.conferenceenddate18 June 2021en_AU
dc.identifier.conferencename30th International Conference on Flexible Automation and Intelligent Manufacturing (FAIM2021)en_AU
dc.identifier.conferenceplaceAthens, Greeceen_AU
dc.identifier.conferencestartdate15 June 2021en_AU
dc.identifier.issn2351-9789en_AU
dc.identifier.journaltitleProcedia Manufacturingen_AU
dc.identifier.pagination842-847en_AU
dc.identifier.placeofpublicationAthens, Greeceen_AU
dc.identifier.urihttps://doi.org/10.1016/j.promfg.2020.10.118en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14543en_AU
dc.identifier.volume51en_AU
dc.language.isoenen_AU
dc.publisherElsevier B. V.en_AU
dc.subjectElectron beam weldingen_AU
dc.subjectPhase transformationsen_AU
dc.subjectMicrostructureen_AU
dc.subjectGrain sizeen_AU
dc.subjectAusteniteen_AU
dc.subjectResidual stressesen_AU
dc.subjectSimulationen_AU
dc.subjectFerritic steelsen_AU
dc.titleElectron beam weld modelling of ferritic steel: effect of prior-austenite grain size on transformation kineticsen_AU
dc.typeConference Paperen_AU
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