Unravelling dynamic recrystallisation in a microalloyed steel during rapid high temperature deformation using synchrotron X-rays

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dc.contributor.authorZhang, Kai
dc.contributor.authorWigger, Tim
dc.contributor.authorPineda, Rosa
dc.contributor.authorHunt, Simon A.
dc.contributor.authorThomas, Ben
dc.contributor.authorKwok, Thomas
dc.contributor.authorDye, David
dc.contributor.authorPlata Redondo, Gorka
dc.contributor.authorLozares Abasolo, Jokin
dc.contributor.authorHurtado Hurtado, Iñaki
dc.contributor.authorMichalik, Stefan
dc.contributor.authorPreuss, Michael
dc.contributor.authorLee, Peter D.
dc.contributor.authorAzeem, Mohammed A.
dc.date.accessioned2025-03-06T11:51:47Z
dc.date.available2025-03-06T11:51:47Z
dc.date.issued2024-10
dc.date.updated2025-03-06T11:51:47Z
dc.description.abstractMicrostructure evolution during high-strain rate and high-temperature thermo-mechanical processing of a 44MnSiV6 microalloyed steel is investigated using in situ synchrotron high-energy powder X-ray diffraction. The conditions selected replicate a newly developed near solidus high-strain rate process designed for reducing raw material use during the hot processing of steels. High temperatures (exceeding 1300 °C) and high strain rate ε˙ = 9 s-1 processing regimes are explored. The lattice strains and dislocation activity estimated from diffraction observations reveal that the microstructure evolution is primarily driven by dynamic recrystallisation. A steady-state stress regime is observed during deformation, which develops due to intermittent and competing work hardening and recovery processes. The texture evolution during the heating, tension, shear deformation and cooling stages is systematically investigated. The direct observation of phase evolution at high-temperature and high-strain rate deformation enables a comprehensive understanding of new manufacturing processes and provides deep insights for the development of constitutive models for face-centred cubic alloys.en
dc.description.sponsorshipThis research is financially supported and funded by the Research Fund for Coal and Steel (RFCS) program of the European Union via Hybrid Semi-Solid Forming project (800763) and the Royal Academy of Engineering (CiET1819/10). We acknowledge the use of facilities and support provided by the Research Complex at Harwell and thank the DLS for providing the beamtime proposal (MG23749) and the staff at the I12 beamline for technical assistance. This experiment was possible due to the contribution of The University of Manchester at Harwell (UoMaH) ETMT. S.A.H. (NE/L006898, NE/P017525) thanks the Natural Environment Research Council (NERC) for fundingen
dc.identifier.citationZhang, K., Wigger, T., Pineda, R., Hunt, S. A., Thomas, B., Kwok, T., Dye, D., Plata, G., Lozares, J., Hurtado, I., Michalik, S., Preuss, M., Lee, P. D., & Azeem, M. A. (2024). Unravelling dynamic recrystallisation in a microalloyed steel during rapid high temperature deformation using synchrotron X-rays. Acta Materialia, 278. https://doi.org/10.1016/J.ACTAMAT.2024.120265
dc.identifier.doi10.1016/J.ACTAMAT.2024.120265
dc.identifier.issn1359-6454
dc.identifier.urihttp://hdl.handle.net/20.500.14454/2469
dc.language.isoeng
dc.publisherActa Materialia Inc
dc.rights© 2024 The Authors
dc.subject.otherDynamic recrystallisation
dc.subject.otherHigh-temperature deformation
dc.subject.otherMicroalloyed steels
dc.subject.otherMicrostructure deformation kinetics
dc.subject.otherSynchrotron diffraction
dc.titleUnravelling dynamic recrystallisation in a microalloyed steel during rapid high temperature deformation using synchrotron X-raysen
dc.typejournal article
dcterms.accessRightsopen access
oaire.citation.titleActa Materialia
oaire.citation.volume278
oaire.licenseConditionhttps://creativecommons.org/licenses/by/4.0/
oaire.versionVoR
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