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dc.creatorAstacio López, Raqueles
dc.creatorGallardo Fuentes, José Maríaes
dc.creatorCintas Físico, Jesúses
dc.creatorGómez Cuevas, Francisco de Paulaes
dc.creatorPrakash, Leoes
dc.creatorTorres Hernández, Yadires
dc.date.accessioned2020-02-25T16:23:43Z
dc.date.available2020-02-25T16:23:43Z
dc.date.issued2019
dc.identifier.citationAstacio López, R., Gallardo Fuentes, J.M., Cintas Físico, J., Gómez Cuevas, F.d.P., Prakash, L. y Torres Hernández, Y. (2019). Fracture toughness of cemented carbides obtained by electrical resistance sintering. International Journal of Refractory Metals and Hard Materials, 80, 259-269.
dc.identifier.issn0263-4368es
dc.identifier.urihttps://hdl.handle.net/11441/93615
dc.description.abstractThe unique combination of hardness, toughness and wear resistance exhibited by WC-Co cemented carbides (hardmetals) has made them a preeminent material choice for extremely demanding applications, such as metal cutting/forming tools or mining bits, in which improved and consistent performance together with high reliability are required. The high fracture toughness values exhibited by hardmetals are mainly due to ductile ligament bridging and crack deflection (intrinsic to carbides). In this work two WC-Co grades obtained by using the electric resistance sintering technique are studied. The relationships between the process parameters (cobalt volume fraction, sintering current and time, die materials, etc.), the microstructural characteristics (porosity, cobalt volume fraction, carbide grain size, binder thickness and carbide contiguity) and mechanical properties (Vickers hardness and fracture toughness) are established and discussed. Also the presence of microstructural anisotropy and residual stresses is studied. The sintering process at 7 kA, 600 ms and 100 MPa, in an alumina die, followed by a treatment of residual stress relief (800 °C, 2 h in high vacuum), allows to obtain WC-Co pellets with the best balance between an homogeneous microstructure and mechanical behaviour.es
dc.description.sponsorshipEU for funding this research with in the framework of the EU 7th Framework FoF.NMP.2013-10 608729 EFFIPRO Projectes
dc.formatapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofInternational Journal of Refractory Metals and Hard Materials, 80, 259-269.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectElectrical resistance sinteringes
dc.subjectCemented carbideses
dc.subjectHardmetales
dc.subjectFracture toughnesses
dc.titleFracture toughness of cemented carbides obtained by electrical resistance sinteringes
dc.typeinfo:eu-repo/semantics/articlees
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.projectIDFoF.NMP.2013-10 608729 EFFIPRO Projectes
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0263436818308953?via%3Dihub#!es
dc.identifier.doi10.1016/j.ijrmhm.2019.02.002es
dc.contributor.groupUniversidad de Sevilla. TEP971: Ingeniería de Materiales Avanzadoses
dc.contributor.groupUniversidad de Sevilla. TEP123: Metalurgia e Ingeniería de los Materialeses
idus.format.extent11 p.es
idus.validador.notaPostprint. Peer Reviewedes
dc.journaltitleInternational Journal of Refractory Metals and Hard Materialses
dc.publication.volumen80es
dc.publication.initialPage259es
dc.publication.endPage269es

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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as: Attribution-NonCommercial-NoDerivatives 4.0 Internacional