Microstructure and compression strength of Co-based superalloys hardened by γ' and carbide precipitation

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dc.contributor.author Cartón Cordero, Marta
dc.contributor.author Campos Gómez, Mónica
dc.contributor.author Freund, Lisa P.
dc.contributor.author Kolb, Markus
dc.contributor.author Neumeier, Steffen
dc.contributor.author Göken, Mathias
dc.contributor.author Torralba Castelló, José Manuel
dc.date.accessioned 2022-04-26T11:17:29Z
dc.date.available 2022-04-26T11:17:29Z
dc.date.issued 2018-09-12
dc.identifier.bibliographicCitation Materials Science and Engineering: A, (2018), v. 734, pp.: 437-444.
dc.identifier.issn 0921-5093
dc.identifier.uri http://hdl.handle.net/10016/34619
dc.description Título de la versión aceptada del artículo: Formation of a γ/γ' microstructure in Co-based superalloys produced by a powder metallurgy route
dc.description.abstract A Co-based superalloy, Co-9Al-9W (at%), was processed by mechanical alloying by high-energy milling of elemental powders and consolidated by field assisted hot pressing (FAHP). The milled powder particles mainly consist of undissolved bcc-W as well as WC and an Al and W rich fcc-γ Co solid solution. After consolidation and heat treatment a fine grained microstructure with a high fraction of carbides and a γ/γ′ microstructure was obtained. The compressive yield strength at room temperature was found to be 45% higher than that of previously reported results for Co-based superalloys. A similar level of strength was found at 700 °C. These extraordinary properties can be explained due to the multitude of hardening mechanisms that sintered Co-based superalloys possess: γ′ precipitation, carbide formation and the ultra-fine γ-grain size promoted by the fast consolidation technique.
dc.description.sponsorship This work has been developed within the international grant DAAD given by the German Academic Exchange Service. PilotManu (European Union, 7th Framework Programme NMP3-SE-2013-604344) funded by EU has supported as well the development. The authors acknowledge also funding by the Deutsche Forschungsgemeinschaft (DFG) of the Collaborative Research Center SFB/TR 103: “From Atoms to Turbine Blades – A Scientific Approach for Developing the Next Generation of Single Crystal Superalloys”.
dc.format.extent 7
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2018 Elsevier B.V. All rights reserved
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Co-Al-W superalloys
dc.subject.other PM route
dc.subject.other Mechanical properties
dc.subject.other Nanoindentation
dc.subject.other Mechanical milling
dc.title Microstructure and compression strength of Co-based superalloys hardened by γ' and carbide precipitation
dc.title.alternative Microstructure and compression strength of Co-based superalloys hardened by [gamma prima] and carbide precipitation
dc.title.alternative Formation of a [gamma/gamma prima] microstructure in Co-based superalloys produced by a powder metallurgy route
dc.type article
dc.description.status Publicado
dc.subject.eciencia Materiales
dc.identifier.doi https://doi.org/10.1016/j.msea.2018.08.007
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/NMP3-SE-2013-604344/PilotManu
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 437
dc.identifier.publicationlastpage 444
dc.identifier.publicationvolume 734
dc.identifier.uxxi AR/0000022252
dc.contributor.funder European Commission
dc.affiliation.dpto UC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Tecnología de Polvos
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