dc.contributor.advisor | | |
dc.creator | Astacio López, Raquel | es |
dc.creator | Gallardo Fuentes, José María | es |
dc.creator | Cintas Físico, Jesús | es |
dc.creator | Montes Martos, Juan Manuel | es |
dc.creator | Gómez Cuevas, Francisco de Paula | es |
dc.creator | Prakash, Leo | es |
dc.creator | Torres Hernández, Yadir | |
dc.date.accessioned | 2020-02-25T16:23:43Z | |
dc.date.available | 2020-02-25T16:23:43Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Astacio López, R., Gallardo Fuentes, J.M., Cintas Físico, J., Montes, J.M., 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.issn | 0263-4368 | es |
dc.identifier.uri | https://hdl.handle.net/11441/93615 | |
dc.description.abstract | The 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.sponsorship | EU for funding this research with in the framework of the EU 7th Framework FoF.NMP.2013-10 608729 EFFIPRO Project | es |
dc.format | application/pdf | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | International Journal of Refractory Metals and Hard Materials, 80, 259-269. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Electrical resistance sintering | es |
dc.subject | Cemented carbides | es |
dc.subject | Hardmetal | es |
dc.subject | Fracture toughness | es |
dc.title | Fracture toughness of cemented carbides obtained by electrical resistance sintering | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte | es |
dc.relation.projectID | FoF.NMP.2013-10 608729 EFFIPRO Project | es |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0263436818308953?via%3Dihub#! | es |
dc.identifier.doi | 10.1016/j.ijrmhm.2019.02.002 | es |
dc.contributor.group | Universidad de Sevilla. TEP971: Ingeniería de Materiales Avanzados | es |
dc.contributor.group | Universidad de Sevilla. TEP123: Metalurgia e Ingeniería de los Materiales | es |
idus.format.extent | 11 p. | es |
idus.validador.nota | Postprint. Peer Reviewed | es |
dc.journaltitle | International Journal of Refractory Metals and Hard Materials | es |
dc.publication.volumen | 80 | es |
dc.publication.initialPage | 259 | es |
dc.publication.endPage | 269 | es |