File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Stochastic theory for jerky deformation in small crystal volumes with pre-existing dislocations

TitleStochastic theory for jerky deformation in small crystal volumes with pre-existing dislocations
Authors
KeywordsAluminium
Deformation
Dislocations
Nanoindentation
Statistical mechanics
Issue Date2008
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/14786435.asp
Citation
Philosophical Magazine, 2008, v. 88 n. 5, p. 677-688 How to Cite?
AbstractA statistical theory is proposed to describe the jerky deformation of micron-sized crystal pillars. The probability for a specimen surviving the applied load without generating a strain burst of a given order is analytically expressed in terms of the nucleation rate of that burst. The survival probability can be measured from an ensemble of macroscopically similar deformation experiments to obtain the nucleation rate. From experiments on aluminium pillars, the nucleation rate is found to increase with the pillar size and to decrease with the burst order, indicating that more sources are present in a larger specimen and that the available nucleating sources are progressively exhausted by the occurrence of bursts. The activation volume measured is roughly independent of the pillar size and burst order, indicating a constant mechanism for burst nucleation.
Persistent Identifierhttp://hdl.handle.net/10722/75999
ISSN
2015 Impact Factor: 1.632
2015 SCImago Journal Rankings: 0.953
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNg, KSen_HK
dc.contributor.authorNgan, AHWen_HK
dc.date.accessioned2010-09-06T07:16:38Z-
dc.date.available2010-09-06T07:16:38Z-
dc.date.issued2008en_HK
dc.identifier.citationPhilosophical Magazine, 2008, v. 88 n. 5, p. 677-688en_HK
dc.identifier.issn1478-6435en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75999-
dc.description.abstractA statistical theory is proposed to describe the jerky deformation of micron-sized crystal pillars. The probability for a specimen surviving the applied load without generating a strain burst of a given order is analytically expressed in terms of the nucleation rate of that burst. The survival probability can be measured from an ensemble of macroscopically similar deformation experiments to obtain the nucleation rate. From experiments on aluminium pillars, the nucleation rate is found to increase with the pillar size and to decrease with the burst order, indicating that more sources are present in a larger specimen and that the available nucleating sources are progressively exhausted by the occurrence of bursts. The activation volume measured is roughly independent of the pillar size and burst order, indicating a constant mechanism for burst nucleation.en_HK
dc.languageengen_HK
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/14786435.aspen_HK
dc.relation.ispartofPhilosophical Magazineen_HK
dc.subjectAluminiumen_HK
dc.subjectDeformationen_HK
dc.subjectDislocationsen_HK
dc.subjectNanoindentationen_HK
dc.subjectStatistical mechanicsen_HK
dc.titleStochastic theory for jerky deformation in small crystal volumes with pre-existing dislocationsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1478-6435&volume=88&issue=5&spage=677&epage=688&date=2008&atitle=Stochastic+theory+for+jerky+deformation+in+small+crystal+volumes+with+pre-existing+dislocationsen_HK
dc.identifier.emailNgan, AHW:hwngan@hkucc.hku.hken_HK
dc.identifier.authorityNgan, AHW=rp00225en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/14786430801953126en_HK
dc.identifier.scopuseid_2-s2.0-42949104500en_HK
dc.identifier.hkuros154693en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-42949104500&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume88en_HK
dc.identifier.issue5en_HK
dc.identifier.spage677en_HK
dc.identifier.epage688en_HK
dc.identifier.isiWOS:000255292000004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridNg, KS=23005417800en_HK
dc.identifier.scopusauthoridNgan, AHW=7006827202en_HK
dc.identifier.citeulike2939922-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats