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Article: Time-dependent incipient plasticity in Ni3Al as observed in nanoindentation

TitleTime-dependent incipient plasticity in Ni3Al as observed in nanoindentation
Authors
KeywordsEngineering
Engineering mechanics and materials physics
Issue Date2005
PublisherMaterials Research Society. The Journal's web site is located at http://www.mrs.org/publications/jmr
Citation
Journal Of Materials Research, 2005, v. 20 n. 2, p. 489-495 How to Cite?
AbstractThe time-dependent characteristics of incipient plasticity in Ni3Al during nanoindentation in the subcritical load regime were investigated statistically. The waiting time for incipient plasticity to occur at constant load was found to follow a Poisson-like distribution, with the peak shifting toward zero holding time as the load increased and eventually becoming an exponential distribution when the load was close to a critical value. The observed distribution of the strain burst waiting time at loads smaller than the critical value was inconsistent with the picture in which dislocations nucleated homogeneously out of the perfect crystal. The kinetics for the occurrence of strain burst in this case is thought to be governed by the accumulative growth of nucleation precursors. © 2005 Materials Research Society.
Persistent Identifierhttp://hdl.handle.net/10722/43067
ISSN
2015 Impact Factor: 1.579
2015 SCImago Journal Rankings: 0.664
ISI Accession Number ID
References

 

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dc.contributor.authorWo, PCen_HK
dc.contributor.authorZuo, Len_HK
dc.contributor.authorNgan, AHWen_HK
dc.date.accessioned2007-03-23T04:38:02Z-
dc.date.available2007-03-23T04:38:02Z-
dc.date.issued2005en_HK
dc.identifier.citationJournal Of Materials Research, 2005, v. 20 n. 2, p. 489-495en_HK
dc.identifier.issn0884-2914en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43067-
dc.description.abstractThe time-dependent characteristics of incipient plasticity in Ni3Al during nanoindentation in the subcritical load regime were investigated statistically. The waiting time for incipient plasticity to occur at constant load was found to follow a Poisson-like distribution, with the peak shifting toward zero holding time as the load increased and eventually becoming an exponential distribution when the load was close to a critical value. The observed distribution of the strain burst waiting time at loads smaller than the critical value was inconsistent with the picture in which dislocations nucleated homogeneously out of the perfect crystal. The kinetics for the occurrence of strain burst in this case is thought to be governed by the accumulative growth of nucleation precursors. © 2005 Materials Research Society.en_HK
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dc.languageengen_HK
dc.publisherMaterials Research Society. The Journal's web site is located at http://www.mrs.org/publications/jmren_HK
dc.relation.ispartofJournal of Materials Researchen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsJournal of Materials Research. Copyright © Materials Research Society.en_HK
dc.subjectEngineeringen_HK
dc.subjectEngineering mechanics and materials physicsen_HK
dc.titleTime-dependent incipient plasticity in Ni3Al as observed in nanoindentationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0884-2914&volume=20&issue=2&spage=489&epage=495&date=2005&atitle=Time-dependent+incipient+plasticity+in+Ni3Al+as+observed+in+nanoindentationen_HK
dc.identifier.emailNgan, AHW:hwngan@hkucc.hku.hken_HK
dc.identifier.authorityNgan, AHW=rp00225en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1557/JMR.2005.0056en_HK
dc.identifier.scopuseid_2-s2.0-23244466626en_HK
dc.identifier.hkuros97477-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-23244466626&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume20en_HK
dc.identifier.issue2en_HK
dc.identifier.spage489en_HK
dc.identifier.epage495en_HK
dc.identifier.isiWOS:000229293000032-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWo, PC=9433530200en_HK
dc.identifier.scopusauthoridZuo, L=36863503700en_HK
dc.identifier.scopusauthoridNgan, AHW=7006827202en_HK
dc.identifier.citeulike572368-

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