Analysis of data on indentation load against penetration depth for bulk MgB2 crystal using indentation work and Oliver-Pharr approaches

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dc.authoridUZUN, ORHAN/0000-0001-7586-9075
dc.contributor.authorUzun, O.
dc.contributor.authorGuclu, N.
dc.contributor.authorKolemen, U.
dc.contributor.authorSahin, O.
dc.date.accessioned2024-09-18T20:59:11Z
dc.date.available2024-09-18T20:59:11Z
dc.date.issued2008
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractVickers microindentation tests were carried out on a bulk MgB2 superconductor with the load of ranging from 300 to 1500 mN at a room temperature. The load-penetration depth curves and the energy data (the absolute, the total, the plastic, and the elastic energy) were analyzed to evaluate the mechanical properties. Hardness and elastic modulus values were calculated by the Oliver-Pharr method and the work of indentation approach. The work of indentation hardness and elastic modulus were calculated directly from the energy of indentation without the need for estimating displacement, areas or volumes, which can be time consuming and inaccurate. It was found that the hardness and elastic modulus increased with decreasing load (i.e. indentation size effect). In addition, the hardness and elastic modulus calculated from the work of indentation approach seem to correlate very well with Oliver-Pharr method at high peak load. Some specific material constant describing the properties of materials were also calculated as total energy, plastic energy, elastic energy, elastic-total energy, plastic-total energy and elastic-plastic energy constants. (C) 2008 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipTurkish State Planning Organization (DPT) [2003K120510]en_US
dc.description.sponsorshipThe authors would like to acknowledge the financial support (Project No. 2003K120510) by Turkish State Planning Organization (DPT) and also thankful to Dr. M. E. Yakinci at Inonu University for the sample supply.en_US
dc.identifier.doi10.1016/j.matchemphys.2008.04.039
dc.identifier.endpage10en_US
dc.identifier.issn0254-0584
dc.identifier.issn1879-3312
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-55349104765en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage5en_US
dc.identifier.urihttps://doi.org/10.1016/j.matchemphys.2008.04.039
dc.identifier.urihttps://hdl.handle.net/20.500.12483/12438
dc.identifier.volume112en_US
dc.identifier.wosWOS:000259423200002en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofMaterials Chemistry and Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectsuperconductoren_US
dc.subjecthardnessen_US
dc.subjectmechanical testingen_US
dc.titleAnalysis of data on indentation load against penetration depth for bulk MgB2 crystal using indentation work and Oliver-Pharr approachesen_US
dc.typeArticleen_US

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