dc.creator | López Arenal, Jesús | es |
dc.creator | Moshtaghion, Bibi Malmal | es |
dc.creator | Cumbrera Hernández, Francisco Luis | es |
dc.creator | Gómez García, Diego | es |
dc.creator | Ortiz, Angel Luis | es |
dc.date.accessioned | 2023-05-25T15:31:12Z | |
dc.date.available | 2023-05-25T15:31:12Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | López Arenal, J., Moshtaghion, B.M., Cumbrera Hernández, F.L., Gómez García, D. y Ortiz, A.L. (2022). Powder-metallurgy fabrication of ZrB2-hardened Zr3Al2intermetallic composites by high-energy ball-milling and reactive spark-plasma sintering. Journal of Materials Research and Technology, 21, 617-626. https://doi.org/10.1016/j.jmrt.2022.09.071. | |
dc.identifier.issn | 2238-7854 | es |
dc.identifier.uri | https://hdl.handle.net/11441/146640 | |
dc.description.abstract | A powder metallurgy route combining high-energy ball-milling (HEBM) of elemental powders and reactive spark-plasma sintering (SPS) is proposed for the controlled fabrication of novel composites based on a Zr-Al intermetallic matrix hardened with a ceramic second-phase. As proof-of-concept, its suitability is demonstrated on ZrB2-hardened Zr3Al2. Specifically, commercially available powders of ZrH2, Al, and B were first combined in molar ratios of 2:1:1 to give an intermetallic-ceramic composite nominally formed by ∼76.8 vol.% Zr3Al2 plus 23.2 vol.% ZrB2, and were intimately mixed and mechanically activated by HEBM in the form of dry shaker milling for 30 min, next identifying by a dilatometric SPS test at 50 MPa pressure that the densification window of these composites is ∼975-1275 °C. Subsequent densification SPS tests at 50 MPa pressure in that temperature interval, and also at 1350 °C, plus the microstructural and mechanical characterisations of the resulting materials, established 1175 °C as the optimal SPS temperature. It was also identified that densification takes place by transient liquid-phase sintering with molten Al, and that it occurs gradually, not abruptly, because most molten Al disappears in a flash by reacting with Zr to form in situ the intermetallic. It is also shown that the combination of HEBM plus reactive SPS yields Zr3Al2+ZrB2 composites with fine-grained microstructures formed essentially by multitudinous ZrB2 nanograins dispersed within a matrix of submicrometre, or nearly submicrometre, Zr3Al2 grains. Importantly, these intermetallic-ceramic composites were found to be very hard (i.e., ∼11.5 GPa), attributable to the hardening provided by the ZrB2 nanograins, and fairly tough (i.e., ∼4.5 MPa·m1/2), and therefore potential candidate materials for a multitude of structural-tribological applications. Finally, implications for future study are discussed. | es |
dc.description.sponsorship | Ministerio de Ciencia e Innovación PID2019-103847RJ-I00 | es |
dc.description.sponsorship | Junta de Andalucía P18-RTJ-197 | es |
dc.description.sponsorship | Junta de Extremadura IB20017 | es |
dc.format | application/pdf | es |
dc.format.extent | 10 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Journal of Materials Research and Technology, 21, 617-626. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | High-energy ball-milling | es |
dc.subject | Intermetallic-ceramic composites | es |
dc.subject | Mechanical properties | es |
dc.subject | Spark plasma sintering | es |
dc.subject | Zr-Al intermetallic | es |
dc.subject | ZrB2hardening | es |
dc.title | Powder-metallurgy fabrication of ZrB2-hardened Zr3Al2intermetallic composites by high-energy ball-milling and reactive spark-plasma sintering | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física de la Materia Condensada | es |
dc.relation.projectID | PID2019-103847RJ-I00 | es |
dc.relation.projectID | P18-RTJ-197 | es |
dc.relation.projectID | IB20017 | es |
dc.relation.projectID | GR21170 | es |
dc.relation.publisherversion | https://doi.org/10.1016/j.jmrt.2022.09.071 | es |
dc.identifier.doi | 10.1016/j.jmrt.2022.09.071 | es |
dc.journaltitle | Journal of Materials Research and Technology | es |
dc.publication.volumen | 21 | es |
dc.publication.initialPage | 617 | es |
dc.publication.endPage | 626 | es |
dc.contributor.funder | Ministerio de Ciencia e Innovación (MICIN). España | es |
dc.contributor.funder | Junta de Andalucía | es |
dc.contributor.funder | Junta de Extremadura | es |