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Article: Line tension of screw dislocations on cross-slip planes

TitleLine tension of screw dislocations on cross-slip planes
Authors
Issue Date1996
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/09500839.asp
Citation
Philosophical Magazine Letters, 1996, v. 74 n. 3, p. 175-187 How to Cite?
AbstractIn this letter the line tension associated with screw dislocations is considered. First, it is shown that screw dislocations can be identified with negative line tensions on various cross-slip planes in cubic crystals; analytical or numerical conditions for negative line tension are given. Secondly, the relative magnitudes of the line tension on relevant cross-slip planes are calculated. The line tension on 〈100〉 and 〈111〉 screw dislocations is found to be fully independent of the cross-slip plane, whereas that of 〈110〉 screw dislocations depends sensitively on the cross-slip plane and is at a maximum on the cube cross-slip plane for most materials. The implications of a negative line tension are discussed and a locking mechanism of elastically unstable screw dislocation is proposed.
Persistent Identifierhttp://hdl.handle.net/10722/156444
ISSN
2015 Impact Factor: 0.918
2015 SCImago Journal Rankings: 0.770
References

 

DC FieldValueLanguage
dc.contributor.authorSun, YQen_US
dc.contributor.authorNgan, AHWen_US
dc.date.accessioned2012-08-08T08:42:27Z-
dc.date.available2012-08-08T08:42:27Z-
dc.date.issued1996en_US
dc.identifier.citationPhilosophical Magazine Letters, 1996, v. 74 n. 3, p. 175-187en_US
dc.identifier.issn0950-0839en_US
dc.identifier.urihttp://hdl.handle.net/10722/156444-
dc.description.abstractIn this letter the line tension associated with screw dislocations is considered. First, it is shown that screw dislocations can be identified with negative line tensions on various cross-slip planes in cubic crystals; analytical or numerical conditions for negative line tension are given. Secondly, the relative magnitudes of the line tension on relevant cross-slip planes are calculated. The line tension on 〈100〉 and 〈111〉 screw dislocations is found to be fully independent of the cross-slip plane, whereas that of 〈110〉 screw dislocations depends sensitively on the cross-slip plane and is at a maximum on the cube cross-slip plane for most materials. The implications of a negative line tension are discussed and a locking mechanism of elastically unstable screw dislocation is proposed.en_US
dc.languageengen_US
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/09500839.aspen_US
dc.relation.ispartofPhilosophical Magazine Lettersen_US
dc.titleLine tension of screw dislocations on cross-slip planesen_US
dc.typeArticleen_US
dc.identifier.emailNgan, AHW: hwngan@hkucc.hku.hken_US
dc.identifier.authorityNgan, AHW=rp00225en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0030241836en_US
dc.identifier.hkuros21069-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030241836&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume74en_US
dc.identifier.issue3en_US
dc.identifier.spage175en_US
dc.identifier.epage187en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridSun, YQ=7406427487en_US
dc.identifier.scopusauthoridNgan, AHW=7006827202en_US

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