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Article: Atomistic simulation of screw dislocation mobility ahead of a mode III crack tip in the BCC structure
Title | Atomistic simulation of screw dislocation mobility ahead of a mode III crack tip in the BCC structure |
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Authors | |
Issue Date | 1999 |
Publisher | Pergamon. 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? |
Abstract | The 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 Identifier | http://hdl.handle.net/10722/75565 |
ISSN | 2023 Impact Factor: 5.3 2023 SCImago Journal Rankings: 1.738 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zhang, HF | en_HK |
dc.contributor.author | Ngan, AHW | en_HK |
dc.date.accessioned | 2010-09-06T07:12:25Z | - |
dc.date.available | 2010-09-06T07:12:25Z | - |
dc.date.issued | 1999 | en_HK |
dc.identifier.citation | Scripta Materialia, 1999, v. 41 n. 7, p. 737-742 | en_HK |
dc.identifier.issn | 1359-6462 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/75565 | - |
dc.description.abstract | The 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.language | eng | en_HK |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/scriptamat | en_HK |
dc.relation.ispartof | Scripta Materialia | en_HK |
dc.title | Atomistic simulation of screw dislocation mobility ahead of a mode III crack tip in the BCC structure | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://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+structure | en_HK |
dc.identifier.email | Ngan, AHW:hwngan@hkucc.hku.hk | en_HK |
dc.identifier.authority | Ngan, AHW=rp00225 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/S1359-6462(99)00209-2 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0032646179 | en_HK |
dc.identifier.hkuros | 48990 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0032646179&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 41 | en_HK |
dc.identifier.issue | 7 | en_HK |
dc.identifier.spage | 737 | en_HK |
dc.identifier.epage | 742 | en_HK |
dc.identifier.isi | WOS:000082481300010 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Zhang, HF=7409198080 | en_HK |
dc.identifier.scopusauthorid | Ngan, AHW=7006827202 | en_HK |
dc.identifier.issnl | 1359-6462 | - |