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Article: Atomistic simulation of screw dislocation mobility ahead of a mode III crack tip in the BCC structure

TitleAtomistic simulation of screw dislocation mobility ahead of a mode III crack tip in the BCC structure
Authors
Issue Date1999
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/scriptamat
Citation
Scripta Materialia, 1999, v. 41 n. 7, p. 737-742 How to Cite?
AbstractThe core structures of three-fold 1/2 〈111〉 screw dislocations situated near a mode III crack tip were studied by molecular dynamics simulation using the J2 potential. For dislocations situated a few atomic distances from the crack tip, the core transformation behavior under stress is almost identical to that in the bulk crystal situation except for the presence of Volterra image force. The effective Peierls stress felt by a dislocation ahead of a crack tip, however, is significantly smaller than the bulk value.
Persistent Identifierhttp://hdl.handle.net/10722/75565
ISSN
2015 Impact Factor: 3.305
2015 SCImago Journal Rankings: 2.375
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, HFen_HK
dc.contributor.authorNgan, AHWen_HK
dc.date.accessioned2010-09-06T07:12:25Z-
dc.date.available2010-09-06T07:12:25Z-
dc.date.issued1999en_HK
dc.identifier.citationScripta Materialia, 1999, v. 41 n. 7, p. 737-742en_HK
dc.identifier.issn1359-6462en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75565-
dc.description.abstractThe core structures of three-fold 1/2 〈111〉 screw dislocations situated near a mode III crack tip were studied by molecular dynamics simulation using the J2 potential. For dislocations situated a few atomic distances from the crack tip, the core transformation behavior under stress is almost identical to that in the bulk crystal situation except for the presence of Volterra image force. The effective Peierls stress felt by a dislocation ahead of a crack tip, however, is significantly smaller than the bulk value.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/scriptamaten_HK
dc.relation.ispartofScripta Materialiaen_HK
dc.titleAtomistic simulation of screw dislocation mobility ahead of a mode III crack tip in the BCC structureen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1359-6462&volume=41&spage=737&epage=742&date=1999&atitle=Atomistic+simulation+of+screw+dislocation+mobility+ahead+of+a+mode+III+crack+tip+in+the+BCC+structureen_HK
dc.identifier.emailNgan, AHW:hwngan@hkucc.hku.hken_HK
dc.identifier.authorityNgan, AHW=rp00225en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S1359-6462(99)00209-2en_HK
dc.identifier.scopuseid_2-s2.0-0032646179en_HK
dc.identifier.hkuros48990en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032646179&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume41en_HK
dc.identifier.issue7en_HK
dc.identifier.spage737en_HK
dc.identifier.epage742en_HK
dc.identifier.isiWOS:000082481300010-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridZhang, HF=7409198080en_HK
dc.identifier.scopusauthoridNgan, AHW=7006827202en_HK

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