File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Conference Paper: An impingement - Spheroldlsation theory for nucleation and grain growth

TitleAn impingement - Spheroldlsation theory for nucleation and grain growth
Authors
Issue Date2004
PublisherTrans Tech Publications Ltd. The Journal's web site is located at http://www.scientific.net
Citation
Materials Science Forum, 2004, v. 467-470 I, p. 45-50 How to Cite?
AbstractIn an investigation of nucleation of recrystallisation in an Interstitial Free steel it was found that new crystals were almost always contained within the rolled-out hot band grain envelopes and were mostly equiaxed. At a later stage they grew and had an aspect ratio of 2:1 but at the completion of recrystallisation were again equiaxed. This is explained by the notion that nucleation occurs relatively frequently in certain grains, that these nuclei have very similar orientations and are thus orientation pinned within the solute and precipitate containing envelopes of the hot band grains. Provided the misorientation is small the impinged group are capable of spheroidisation provided the driving force across the pinned boundary is sufficient to overcome the pinning, because, by definition, this pinned boundary is of high angle character. The theory, as it is presented as coalescence, relies on a form of Östwald ripening and therefore provides a possible explanation of why grain growth kinetics obeys a time exponent of between 1/2 and 1/3. A similar observation of high aspect ratio grains has been made many times in the case of cold rolled copper which forms cube texture. Again, nuclei are formed in the cube bands, but these are prevented from lengthening because of orientation pinning. However, when the length of a group of such impinged nuclei is sufficient, spheroidisation will produce equiaxed grains. © 2004 Trans Tech Publications, Switzerland.
Persistent Identifierhttp://hdl.handle.net/10722/174088
ISSN
2005 Impact Factor: 0.399
References

 

DC FieldValueLanguage
dc.contributor.authorDuggan, BJen_US
dc.contributor.authorTse, YYen_US
dc.contributor.authorShen, GJen_US
dc.date.accessioned2012-11-14T06:20:48Z-
dc.date.available2012-11-14T06:20:48Z-
dc.date.issued2004en_US
dc.identifier.citationMaterials Science Forum, 2004, v. 467-470 I, p. 45-50en_US
dc.identifier.issn0255-5476en_US
dc.identifier.urihttp://hdl.handle.net/10722/174088-
dc.description.abstractIn an investigation of nucleation of recrystallisation in an Interstitial Free steel it was found that new crystals were almost always contained within the rolled-out hot band grain envelopes and were mostly equiaxed. At a later stage they grew and had an aspect ratio of 2:1 but at the completion of recrystallisation were again equiaxed. This is explained by the notion that nucleation occurs relatively frequently in certain grains, that these nuclei have very similar orientations and are thus orientation pinned within the solute and precipitate containing envelopes of the hot band grains. Provided the misorientation is small the impinged group are capable of spheroidisation provided the driving force across the pinned boundary is sufficient to overcome the pinning, because, by definition, this pinned boundary is of high angle character. The theory, as it is presented as coalescence, relies on a form of Östwald ripening and therefore provides a possible explanation of why grain growth kinetics obeys a time exponent of between 1/2 and 1/3. A similar observation of high aspect ratio grains has been made many times in the case of cold rolled copper which forms cube texture. Again, nuclei are formed in the cube bands, but these are prevented from lengthening because of orientation pinning. However, when the length of a group of such impinged nuclei is sufficient, spheroidisation will produce equiaxed grains. © 2004 Trans Tech Publications, Switzerland.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.titleAn impingement - Spheroldlsation theory for nucleation and grain growthen_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-s2.0-17044401008en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-17044401008&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume467-470en_US
dc.identifier.issueIen_US
dc.identifier.spage45en_US
dc.identifier.epage50en_US
dc.publisher.placeSwitzerlanden_US
dc.identifier.scopusauthoridDuggan, BJ=7005772998en_US
dc.identifier.scopusauthoridTse, YY=7005116855en_US
dc.identifier.scopusauthoridShen, GJ=7401966919en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats