Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/7788
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dc.contributor.authorBöttger, B-
dc.contributor.authorApel, M-
dc.contributor.authorSantillana, B-
dc.contributor.authorEskin, DG-
dc.date.accessioned2013-12-10T15:18:57Z-
dc.date.available2013-12-10T15:18:57Z-
dc.date.issued2013-
dc.identifier.citationMetallurgical and Materials Transactions A, 44(8), 3765 - 3777, 2013en_US
dc.identifier.issn1073-5623-
dc.identifier.issn1073-5623-
dc.identifier.urihttp://bura.brunel.ac.uk/handle/2438/7788-
dc.description© The Minerals, Metals & Materials Society and ASM International 2013en_US
dc.description.abstractHot cracking is one of the major defects in continuous casting of steels, frequently limiting the productivity. To understand the factors leading to this defect, microstructure formation is simulated for a low-carbon and two high-strength low-alloyed steels. 2D simulation of the initial stage of solidification is performed in a moving slice of the slab using proprietary multiphase-field software and taking into account all elements which are expected to have a relevant effect on the mechanical properties and structure formation during solidification. To account for the correct thermodynamic and kinetic properties of the multicomponent alloy grades, the simulation software is online coupled to commercial thermodynamic and mobility databases. A moving-frame boundary condition allows traveling through the entire solidification history starting from the slab surface, and tracking the morphology changes during growth of the shell. From the simulation results, significant microstructure differences between the steel grades are quantitatively evaluated and correlated with their hot cracking behavior according to the Rappaz-Drezet-Gremaud (RDG) hot cracking criterion. The possible role of the microalloying elements in hot cracking, in particular of traces of Ti, is analyzed. With the assumption that TiN precipitates trigger coalescence of the primary dendrites, quantitative evaluation of the critical strain rates leads to a full agreement with the observed hot cracking behavior. © 2013 The Minerals, Metals & Materials Society and ASM International.en_US
dc.language.isoenen_US
dc.publisherASM Internationalen_US
dc.titleRelationship between solidification microstructure and hot cracking susceptibility for continuous casting of low-carbon and high-strength low-alloyed steels: A phase-field studyen_US
dc.typeArticleen_US
dc.identifier.doihttp://dx.doi.org/10.1007/s11661-013-1732-9-
pubs.organisational-data/Brunel-
pubs.organisational-data/Brunel/Brunel Active Staff-
pubs.organisational-data/Brunel/Brunel Active Staff/Brunel Centre for Advanced Solidification Technology (BCAST)-
pubs.organisational-data/Brunel/Brunel Active Staff/Brunel Centre for Advanced Solidification Technology (BCAST)/BCAST-
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Brunel Centre for Advanced Solidification Technology (BCAST)

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