Analysis of indentation size effect on mechanical properties of cu-diffused bulk MgB2 superconductor using experimental and different theoretical models

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dc.authorid0000-0002-5177-3703en_US
dc.authorid0000-0002-4214-9159en_US
dc.authorid0000-0002-0391-5551en_US
dc.contributor.authorDoğruer, Musa
dc.contributor.authorYıldıırm, Gürcan
dc.contributor.authorÖztürk, Özgür
dc.contributor.authorTerzioğlu, Cabir
dc.date.accessioned2021-06-23T19:35:10Z
dc.date.available2021-06-23T19:35:10Z
dc.date.issued2013
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractThis study indicates the change of the electrical, microstructural, physical, mechanical and superconducting properties of Cu-diffused bulk MgB2 superconductors by means of scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), microhardness and dc resistivity measurements. The samples are prepared at different annealing temperatures in the range from 650 to 850 C-a similar to. Electrical and superconducting properties of samples are estimated from the dc electrical resistivity measurements. Moreover, microhardness measurements are performed to investigate the mechanical properties. Further, phase composition, grain sizes and lattice parameters are determined from the XRD measurements. At the same time, the surface morphology and grain connectivity of the samples are examined by SEM investigations. The measurements conducted demonstrate that both the Cu diffusion into the MgB2 system and the increment in the diffusion-annealing temperature increase the critical transition temperatures. Similarly, microstructure and grain size improve while the voids and porosity decrease with the increase of the diffusion-annealing temperature. In addition, the experimental results of the microhardness measurements are investigated using the Meyer's law, PSR (proportional specimen resistance), modified PRS (MPSR), elastic-plastic deformation model (EPD) and Hays-Kendall (HK) approach. The obtained microhardness values of the samples decrease with the increase of the diffusion-annealing temperature up to 850 C-a similar to. The Hays-Kendall approach is found to be the most successful model describing the mechanical properties of the samples studied in this work.en_US
dc.identifier.doi10.1007/s10948-012-1719-6
dc.identifier.endpage109en_US
dc.identifier.issn1557-1939
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-84871963160en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage101en_US
dc.identifier.urihttps://doi.org/10.1007/s10948-012-1719-6
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7727
dc.identifier.volume26en_US
dc.identifier.wosWOS:000312882500013en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorDoğruer, Musa
dc.institutionauthorYıldıırm, Gürcan
dc.institutionauthorTerzioğlu, Cabir
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of Superconductivity And Novel Magnetismen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCu-diffused Bulk MgB2 Superconductorsen_US
dc.subjectIndentation Size Effecten_US
dc.subjectVickers Microhardnessen_US
dc.subjectMeyer's Lawen_US
dc.subjectPSRen_US
dc.subjectMPSRen_US
dc.subjectEPDen_US
dc.subjectHK Approachen_US
dc.titleAnalysis of indentation size effect on mechanical properties of cu-diffused bulk MgB2 superconductor using experimental and different theoretical modelsen_US
dc.typeArticleen_US

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