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dc.contributor.authorSandoval Ravotti, Daniela Andreina
dc.contributor.authorRinaldi, Antonio
dc.contributor.authorNotargiacomo, A.
dc.contributor.authorTher, O
dc.contributor.authorRoa Rovira, Joan Josep
dc.contributor.authorLlanes Pitarch, Luis Miguel
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Ciència i Enginyeria dels Materials
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials
dc.identifier.citationSandoval, D.A. [et al.]. WC-base cemented carbides with partial and total substitution of Co as binder: Evaluation of mechanical response by means of uniaxial compression of micropillars. "International journal of refractory metals and hard materials", 1 Novembre 2019, vol. 84, p. 1-8.
dc.description.abstractThe influence of the chemical nature of the metallic binder on the plastic deformation of cemented carbides was studied. Three different cemented carbide grades - WC-Co, WC-CoNi and WC-NiMo - with similar microstructural characteristics (binder content and carbide grain size) were investigated. Mechanical response was evaluated by means of uniaxial compression of micropillars, and tests were carried out in-situ in a FESEM with a nanoindenter equipped with a flat-diamond punch. After uniaxial compression, inspection of deformation phenomena was done at both surface and bulk of micropillars through scanning and transmission electron microscopy, respectively. It is found that yielding phenomena and strain hardening increase as Co is totally substituted by a NiMo alloy, while contrary effect results from partial replacement of Co with Ni. Relative differences are directly linked to intrinsic ductility of the metallic phase and operative plastic deformation mechanisms. Moreover, for the three materials studied, stress-strain responses show pronounced yielding events related to glide at WC/WC interfaces. Although they are discerned at different stress levels, estimated values of sliding resistance of WC/WC boundaries are found to be alike for the three grades studied.
dc.format.extent8 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Metal·lúrgia
dc.subject.lcshMaterials -- Mechanical properties
dc.subject.otherCemented carbides
dc.subject.otherMicromechanical testing
dc.subject.otherUniaxial compression of micropillars
dc.subject.otherPlastic deformation
dc.titleWC-base cemented carbides with partial and total substitution of Co as binder: Evaluation of mechanical response by means of uniaxial compression of micropillars
dc.subject.lemacMaterials -- Propietats mecàniques
dc.contributor.groupUniversitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural, Micromecànica i Fiabilitat dels Materials
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (author's final draft)
local.citation.authorSandoval, D.A.; Rinaldi, A.; Notargiacomo, A.; Ther, O.; Roa, J.J.; Llanes, L.
local.citation.publicationNameInternational journal of refractory metals and hard materials

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