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dc.contributor.authorCongreve, Jasminen
dc.contributor.authorShi, Yunhuaen
dc.contributor.authorHuang, Dannyen
dc.contributor.authorDennis, Tonyen
dc.contributor.authorDurrell, Johnen
dc.contributor.authorCardwell, Daviden
dc.date.accessioned2019-11-20T00:31:28Z
dc.date.available2019-11-20T00:31:28Z
dc.date.issued2020-01-01en
dc.identifier.issn0953-2048
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/299053
dc.description.abstractThe widespread use of melt processed, single grain (RE)-Ba-Cu-O bulk superconductors [(RE)BCO], where RE=Y, Gd or Sm, is limited predominantly by the poor mechanical properties of these inherently brittle, ceramic-like materials. The high density of flaws, such as cracks and voids, within the single grain microstructure leads directly to a low fracture toughness. As a result, the Lorentz forces, generated when these materials carry current in the presence of a large magnetic field, create stresses sufficiently large to cause brittle failure. The addition of Ba-Cu-O (liquid phase) and Ag to the precursor composition prior to melt-growth has been demonstrated to be effective in improving the mechanical properties of these technologically important materials. In this work, we characterise the mechanical failure of single grain YBCO bulk superconductors in terms of a Weibull statistical distribution. In addition, differences in fracture mechanisms have been studied to provide a better understanding of how the provision of additional liquid phase and silver produces YBCO single grains with better resulting mechanical properties and how these can be improved further.
dc.description.sponsorshipThe authors would like to acknowledge the support of the Engineering and Physical Sciences Research Council (EPSRC grant ref. EP/P00962X/1) for financial support.
dc.publisherInstitute of Physics Publishing
dc.rightsAll rights reserved
dc.rights.uri
dc.titleCharacterisation of the mechanical failure and fracture mechanisms of single grain Y-Ba-Cu-O bulk superconductorsen
dc.typeArticle
prism.issueIdentifier1en
prism.publicationDate2020en
prism.publicationNameSuperconductor Science and Technologyen
prism.volume33en
dc.identifier.doi10.17863/CAM.46115
dcterms.dateAccepted2019-11-18en
rioxxterms.versionofrecord10.1088/1361-6668/ab5b46en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-01-01en
dc.contributor.orcidCongreve, Jasmin [0000-0002-2025-2155]
dc.contributor.orcidHuang, Danny [0000-0001-7476-305X]
dc.contributor.orcidDennis, Tony [0000-0003-4962-7149]
dc.contributor.orcidDurrell, John [0000-0003-0712-3102]
dc.contributor.orcidCardwell, David [0000-0002-2020-2131]
dc.identifier.eissn1361-6668
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (1619794)
pubs.funder-project-idEPSRC (1619794)
pubs.funder-project-idEPSRC (EP/P00962X/1)
cam.orpheus.successThu Jan 30 10:36:54 GMT 2020 - Embargo updated*
rioxxterms.freetoread.startdate2020-12-11


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