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dc.creatorTarragó, José Maríaes
dc.creatorJiménez-Piqué, Emilioes
dc.creatorSchneider, Ludwiges
dc.creatorCasellas, D.es
dc.creatorTorres Hernández, Yadires
dc.creatorLlanes Pitarch, Luis Migueles
dc.date.accessioned2018-11-13T18:42:16Z
dc.date.available2018-11-13T18:42:16Z
dc.date.issued2015
dc.identifier.citationTarragó, J.M., Jiménez-Piqué, E., Schneider, L., Casellas, D., Torres Hernández, Y. y Llanes Pitarch, L.M. (2015). FIB/FESEM experimental and analytical assessment of R-curve behavior of WC-Co cemented carbides. Materials Science & Engineering A, 645, 142-149.
dc.identifier.issn0921-5093es
dc.identifier.urihttps://hdl.handle.net/11441/80124
dc.description.abstractExceptional fracture toughness levels exhibited by WC-Co cemented carbides (hardmetals) are due mainly to toughening derived from plastic stretching of crack-bridging ductile enclaves. This takes place due to the development of a multiligament zone at the wake of cracks growing in a stable manner. As a result, hardmetals exhibit crack growth resistance (R-curve) behavior. In this work, the toughening mechanics and mechanisms of these materials are investigated by combining experimental and analytical approaches. Focused Ion Beam technique (FIB) and Field-Emission Scanning Electron Microscopy ( FESEM) are implemented to obtain serial sectioning and imaging of crack-microstructure interaction in cracks arrested after stable extension under monotonic loading. The micrographs obtained provide experimental proof of the developing multiligament zone, including failure micromechanisms within individual bridging ligaments. Analytical assessment of the multiligament zone is then conducted on the basis of experimental information attained from FIB/FESEM images, and a model for the description of R-curve behavior of hardmetals is proposed. It was found that, due to the large stresses supported by the highly constrained and strongly bonded bridging ligaments, WC-Co cemented carbides exhibit quite steep but short R-curve behavior. Relevant strength and reliability attributes exhibited by hardmetals may then be rationalized on the basis of such toughening scenario.es
dc.description.sponsorshipMinisterio de España de Economía y Competitividad (Grant MAT2012-34602)es
dc.description.sponsorshipIndustry-University program between Sandvik Hyperion and Universitat Politècnica de Catalunyaes
dc.formatapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofMaterials Science & Engineering A, 645, 142-149.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectA. Micromechanicses
dc.subjectFIB/FESEMes
dc.subjectR-curve B. Cemented carbides D. Fracturees
dc.subjectToughnesses
dc.titleFIB/FESEM experimental and analytical assessment of R-curve behavior of WC-Co cemented carbideses
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/acceptedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transportees
dc.relation.projectIDMAT2012-34602es
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0921509315302422es
dc.identifier.doi10.1016/j.msea.2015.07.090es
dc.contributor.groupUniversidad de Sevilla. TEP123: Metalurgia e Ingeniería de los Materialeses
idus.format.extent8 p.es
dc.journaltitleMaterials Science & Engineering Aes
dc.publication.volumen645es
dc.publication.initialPage142es
dc.publication.endPage149es

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