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Article: Theoretical and experimental studies on laser transformation hardening of steel by customized beam

TitleTheoretical and experimental studies on laser transformation hardening of steel by customized beam
Authors
Leung, MKHMan, HCYu, JK
KeywordsExact solution
Flat-top rectangular beam
Laser transformation hardening
Moving phase-change interface
Issue Date2007
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhmt
Citation
International Journal Of Heat And Mass Transfer, 2007, v. 50 n. 23-24, p. 4600-4606 How to Cite?
DOI: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2007.03.022
AbstractAn exact solution was developed for a quasi-steady-moving-interface heat transfer problem in laser transformation hardening by a beam customized to a flat-top rectangular shape. The absorption and release of the latent heat were taken into account. The solution provided the body temperature, heating rate, and subsequent cooling rate. Using the IT and CCT diagrams, the rapid austenitization and pearlitic/martensitic phase transformation were determined for prediction of the hardening effect. In the experimental study, a diffractive optical kinoform (DOK) was used to customize a conventional Gaussian laser spot beam to a flat-top rectangular beam. A reasonable agreement between the theoretical predictions and the experimental measurements was obtained. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/75758
ISSN
0017-9310
2021 Impact Factor: 5.431
2020 SCImago Journal Rankings: 1.713
ISI Accession Number ID
WOS:000250789600008
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorLeung, MKHen_HK
dc.contributor.authorMan, HCen_HK
dc.contributor.authorYu, JKen_HK
dc.date.accessioned2010-09-06T07:14:16Z-
dc.date.available2010-09-06T07:14:16Z-
dc.date.issued2007en_HK
dc.identifier.citationInternational Journal Of Heat And Mass Transfer, 2007, v. 50 n. 23-24, p. 4600-4606en_HK
dc.identifier.issn0017-9310en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75758-
dc.description.abstractAn exact solution was developed for a quasi-steady-moving-interface heat transfer problem in laser transformation hardening by a beam customized to a flat-top rectangular shape. The absorption and release of the latent heat were taken into account. The solution provided the body temperature, heating rate, and subsequent cooling rate. Using the IT and CCT diagrams, the rapid austenitization and pearlitic/martensitic phase transformation were determined for prediction of the hardening effect. In the experimental study, a diffractive optical kinoform (DOK) was used to customize a conventional Gaussian laser spot beam to a flat-top rectangular beam. A reasonable agreement between the theoretical predictions and the experimental measurements was obtained. © 2007 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhmten_HK
dc.relation.ispartofInternational Journal of Heat and Mass Transferen_HK
dc.subjectExact solutionen_HK
dc.subjectFlat-top rectangular beamen_HK
dc.subjectLaser transformation hardeningen_HK
dc.subjectMoving phase-change interfaceen_HK
dc.titleTheoretical and experimental studies on laser transformation hardening of steel by customized beamen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0017-9310&volume=50&issue=23-24&spage=4600&epage=4606&date=2007&atitle=Theoretical+and+experimental+studies+on+laser+transformation+hardening+of+steel+by+customized+beamen_HK
dc.identifier.emailLeung, MKH:en_HK
dc.identifier.authorityLeung, MKH=rp00148en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.ijheatmasstransfer.2007.03.022en_HK
dc.identifier.scopuseid_2-s2.0-34748891373en_HK
dc.identifier.hkuros147593en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34748891373&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume50en_HK
dc.identifier.issue23-24en_HK
dc.identifier.spage4600en_HK
dc.identifier.epage4606en_HK
dc.identifier.isiWOS:000250789600008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLeung, MKH=8862966600en_HK
dc.identifier.scopusauthoridMan, HC=7102326766en_HK
dc.identifier.scopusauthoridYu, JK=16178422800en_HK
dc.identifier.issnl0017-9310-

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