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Conference Paper: Role of grain boundaries, deformation and transition bands in the nucleation and successful growth of y grains during the recrystallization of IF steel

TitleRole of grain boundaries, deformation and transition bands in the nucleation and successful growth of y grains during the recrystallization of IF steel
Authors
KeywordsGrain Growth
Grain Nucleation
If Steel
Recrystallization
Y-Grains
{111}-Texture Enhancement
Issue Date2002
PublisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.net
Citation
Materials Science Forum, 2002, v. 408-412 II, p. 1233-1238 How to Cite?
AbstractThe recrystallization behaviour of IF steel during continuous annealing has been examined throughout the process by SEM and OIM. In partially annealed specimens, recrystallization frequently was observed in the interiors of deformation banded γ grains. As predicted by the deformation banding theory, the splitting of orientations of deformation banded (DB) grains is often parallel to RD and therefore, rolling plane sections give better information of orientation gradients in DB grains. OIM revealed that during the early stages of recrystallization, {111} deformed material recrystallized first at the deformation bands which contain <111>//ND deformed volumes. Grain boundary nucleation happens mainly at the boundaries of γ-γ grains and therefore favours the formation of γ recrystallized grains. A recrystallized grain impingement model has been proposed to explain how the 5∼7μm diameter recrystallized grains "break out" of their confining original hot band grain boundaries to consume the remaining deformed volume. Grain impingement allows a "nucleus" of sufficient length to bulge out and continue to grow until it becomes spherodised. This also gives an explanation for the enhancement of {111} texture in the later stages of recrystallization. Also implied is that only these larger grains can invade the α grains, which is in accordance with the observation of many workers that α begins to be consumed when the process is about 70% complete.
Persistent Identifierhttp://hdl.handle.net/10722/174091
ISSN
2005 Impact Factor: 0.399
References

 

DC FieldValueLanguage
dc.contributor.authorTse, YYen_US
dc.contributor.authorDuggan, BJen_US
dc.date.accessioned2012-11-14T06:20:49Z-
dc.date.available2012-11-14T06:20:49Z-
dc.date.issued2002en_US
dc.identifier.citationMaterials Science Forum, 2002, v. 408-412 II, p. 1233-1238en_US
dc.identifier.issn0255-5476en_US
dc.identifier.urihttp://hdl.handle.net/10722/174091-
dc.description.abstractThe recrystallization behaviour of IF steel during continuous annealing has been examined throughout the process by SEM and OIM. In partially annealed specimens, recrystallization frequently was observed in the interiors of deformation banded γ grains. As predicted by the deformation banding theory, the splitting of orientations of deformation banded (DB) grains is often parallel to RD and therefore, rolling plane sections give better information of orientation gradients in DB grains. OIM revealed that during the early stages of recrystallization, {111} deformed material recrystallized first at the deformation bands which contain <111>//ND deformed volumes. Grain boundary nucleation happens mainly at the boundaries of γ-γ grains and therefore favours the formation of γ recrystallized grains. A recrystallized grain impingement model has been proposed to explain how the 5∼7μm diameter recrystallized grains "break out" of their confining original hot band grain boundaries to consume the remaining deformed volume. Grain impingement allows a "nucleus" of sufficient length to bulge out and continue to grow until it becomes spherodised. This also gives an explanation for the enhancement of {111} texture in the later stages of recrystallization. Also implied is that only these larger grains can invade the α grains, which is in accordance with the observation of many workers that α begins to be consumed when the process is about 70% complete.en_US
dc.languageengen_US
dc.publisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.neten_US
dc.relation.ispartofMaterials Science Forumen_US
dc.subjectGrain Growthen_US
dc.subjectGrain Nucleationen_US
dc.subjectIf Steelen_US
dc.subjectRecrystallizationen_US
dc.subjectY-Grainsen_US
dc.subject{111}-Texture Enhancementen_US
dc.titleRole of grain boundaries, deformation and transition bands in the nucleation and successful growth of y grains during the recrystallization of IF steelen_US
dc.typeConference_Paperen_US
dc.identifier.emailDuggan, BJ: bjduggan@hkucc.hku.hken_US
dc.identifier.authorityDuggan, BJ=rp01686en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-19244380048en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-19244380048&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume408-412en_US
dc.identifier.issueIIen_US
dc.identifier.spage1233en_US
dc.identifier.epage1238en_US
dc.publisher.placeSwitzerlanden_US
dc.identifier.scopusauthoridTse, YY=7005116855en_US
dc.identifier.scopusauthoridDuggan, BJ=7005772998en_US

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