Processing, microstructure and mechanical characterization of dispersion strengthened Cu-1%Y

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Show simple item record Carro Sevillano, Gabriel Muñoz Castellanos, Ángel Savoini Cardiel, Begoña Monge Alcázar, Miguel Ángel Pareja Pareja, Ramiro 2021-05-26T08:11:29Z 2021-05-26T08:11:29Z 2019-01
dc.identifier.bibliographicCitation Carro, G., Muñoz, A., Savoini, B., Monge, M. & Pareja, R. (2019). Processing, microstructure and mechanical characterization of dispersion strengthened Cu-1%Y. Fusion Engineering and Design, vol. 138, pp. 321–331.
dc.identifier.issn 0920-3796
dc.description.abstract Dispersion strengthened Cu-1%Y (wt%) has been produced by mechanical alloying and subsequent consolidation by hot isostatic pressing (HIP). Samples of this alloy have been submitted to an equal channel angular pressing (ECAP) process and the effects on the microstructure and mechanical properties analyzed. The characteristics of the microstructure, such as the size distributions of both, the grains and Y-rich particles dispersed in the Cu matrix, have been studied by high resolution electron scanning microscopy and electron backscatter diffraction. The as-HIP alloy exhibits a quasi-bimodal distribution with an average diameter of 17 ± 14 μm. The ECAP treatment refines the average grain size to 1.3 ± 0.9 μm besides changing the size distribution of the Y-rich particles, which shifted from average size from 94 ± 9 nm to 55 ± 8 nm after ECAP. The mechanical characteristics have been investigated by means of microhardness measurements, and stress-strain tests in the temperature range 293 ― 573 K. The ECAP deformation resulted in an increase of the mechanical strength and a decrease in ductility. It is found that the Voce law can satisfactorily describe the plastic and hardening rate behavior of these alloys. The strain hardening rate plots as a function of flow stress for the samples tested at 293 ≤ T ≤ 773 K exhibited a two-stage behavior, comprising a transient stage at low stresses followed by the characteristic linear dependence for the stage III of hardening in f.c.c. metals.
dc.format.extent 11
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2018 Elsevier B.V.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Dispersion strengthened copper
dc.subject.other Equal channel angular pressing
dc.subject.other Strain hardening rate
dc.subject.other Voce model
dc.title Processing, microstructure and mechanical characterization of dispersion strengthened Cu-1%Y
dc.type article
dc.subject.eciencia Física
dc.rights.accessRights openAccess
dc.relation.projectID Comunidad de Madrid. S2013/MIT-2862
dc.relation.projectID Comunidad de Madrid. S2013/MAE-2745
dc.relation.projectID Gobierno de España. ENE2015-70300-C3-2-R
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 321
dc.identifier.publicationlastpage 331
dc.identifier.publicationtitle Fusion Engineering and Design
dc.identifier.publicationvolume 138
dc.identifier.uxxi AR/0000023177
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.contributor.funder Comunidad de Madrid
dc.affiliation.dpto UC3M. Departamento de Física
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Materiales Nano-Estructurados y Multifuncionales
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