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dc.contributor.authorCalvo Muñoz, Jessica
dc.contributor.authorCabrera Marrero, José M.
dc.contributor.authorShu, Sheyu
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.date.accessioned2012-07-05T10:01:19Z
dc.date.created2012
dc.date.issued2012
dc.identifier.citationCalvo, J.; Cabrera, J.; Shu, S. Characterization of precipitation kinetics of Inconel 718 superalloy by the stress relaxation technique. "Materials science forum", 2012, vol. 706-709, p. 2393-2399.
dc.identifier.issn0255-5476
dc.identifier.urihttp://hdl.handle.net/2117/16185
dc.description.abstractInconel 718 is a nickel-chromium-iron superalloy which presents excellent mechanical properties at high temperatures, as well as good corrosion resistance and weldability. These characteristics can be optimized with an appropriate control of microstructural features such as grain size and precipitation. Precipitates of different nature can form in these alloys, i.e. γ’’ (a metastable metallic compound Ni3Nb), γ’ (Ni3(Ti, Al), carbides and/or δ phase (intermetallic Ni3Nb). Aging treatments are usually designed to obtain the precipitation required in order to optimize mechanical properties. However, precipitation can also appear induced by deformation and therefore interfere with hot forming operations, such as forging. Under these conditions, precipitation may lead to an increase of the loads required to carry out the process. The aim of the work was the characterization of precipitation kinetics for Inconel 718. With this purpose, stress relaxation tests were carried out at temperatures ranging from 950°C to 800°C. Moreover, different amounts of deformation were applied to the samples, prior to stress relaxation, to evaluate the effect of this variable on inducing precipitation. Some samples were quenched at different relaxation times for metallographic evaluation. The results obtained through mechanical testing, together with a proper characterization of precipitation by Scanning Electron Microscopy, were the basis for obtaining precipitation-timetemperature (PTT) diagrams after different deformation conditions.
dc.format.extent7 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshInconel
dc.titleCharacterization of precipitation kinetics of Inconel 718 superalloy by the stress relaxation technique
dc.typeArticle
dc.subject.lemacInconel
dc.subject.lemacAliatges
dc.contributor.groupUniversitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.identifier.doi10.4028/www.scientific.net/MSF.706-709.2393
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://upcommons.upc.edu/e-prints/retrieve/84937/MSF.706-709.2393%5B1%5D.pdf
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac10616508
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorCalvo, J.; Cabrera, J.; Shu, S.
local.citation.publicationNameMaterials science forum
local.citation.volume706-709
local.citation.startingPage2393
local.citation.endingPage2399


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Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain