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dc.contributor.authorLu, Chunsheng
dc.contributor.authorMai, Y.
dc.contributor.authorTam, P.
dc.contributor.authorShen, Y.
dc.date.accessioned2017-01-30T11:01:15Z
dc.date.available2017-01-30T11:01:15Z
dc.date.created2009-03-05T00:55:21Z
dc.date.issued2007
dc.identifier.citationLu, Chunsheng and Mai, Yiu-Wing and Tam, P. and Shen, Y. 2007. Nanoindentation-induced elastic-plastic transition and size effect in a-Al2o3(0001). Philosophical Magazine Letters. 87 (6): pp. 409-415.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/7628
dc.identifier.doi10.1080/09500830701203156
dc.description.abstract

The mechanical properties of a-Al2O3(0001) have been investigated by using the technique of nanoindentation with a Berkovich indenter. Coupled with the Hertzian contact theory, a theoretical shear strength of 28 +- 2 GPa was determined from the onset of pop-in events on load-displacement curves during loading, and the intrinsic hardness 30 +- 3 GPa was obtained by analysis of the so-called indentation size effect, based on the concept of geometrically necessary dislocations. The predicted values of the shear strength, hardness, and elastic modulus are in good agreement with available experimental data. The importance of experimentally calibrating the area function over the contact depth range prior to nanoindentation tests is emphasized.

dc.publisherTaylor & Francis
dc.titleNanoindentation-induced elastic-plastic transition and size effect in a-Al2O3(0001)
dc.typeJournal Article
dcterms.source.volume87
dcterms.source.number6
dcterms.source.startPage409
dcterms.source.endPage415
dcterms.source.issn0950-0839
dcterms.source.titlePhilosophical Magazine Letters
curtin.accessStatusFulltext not available
curtin.facultyFaculty of Science and Engineering
curtin.facultyDepartment of Mechanical Engineering
curtin.facultySchool of Civil and Mechanical Engineering


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