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dc.rights.licenseAttribution 4.0 International*
dc.contributor.authorBernal Rodríguez, Daniel
dc.contributor.authorChamorro Sánchez, Xabier
dc.contributor.authorHurtado Hurtado, Iñaki
dc.contributor.otherMadariaga Rodríguez, Iñaki
dc.date.accessioned2020-10-19T10:12:24Z
dc.date.available2020-10-19T10:12:24Z
dc.date.issued2020
dc.identifier.issn2075-4701en
dc.identifier.otherhttps://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=160395en
dc.identifier.urihttp://hdl.handle.net/20.500.11984/1859
dc.description.abstractBoron is a unique and popular grain refiner element in cast titanium aluminide (TiAl) alloys, as it helps to improve mechanical properties if properly alloyed. However, the formation mechanism of different types of borides in cast TiAl alloys is not yet clearly understood. This study seeks to correlate the chemical composition and cooling rate during solidification of cast TiAl alloys, with the type of boride precipitated and the resulting microstructure. Several β-solidifying γ-TiAl alloys of the TNM family were cast, alloying boron to a starting Ti-44.5Al-4Nb-1Mo-0.1B (at.%) alloy. The alloys were manufactured with an induction skull melting furnace and poured into a stepped 2, 4, 8 and 16 mm thickness mold to achieve different cooling rates. On one hand, the results reveal that boron contents below 0.5 at.% and cooling rates during solidification above 10 K/s promote the formation of detrimental ribbon borides. On the other hand, boron contents above 0.5 at.% and cooling rates during solidification below 10 K/s promote the formation of a refined microstructure with blocky borides. Finally, the formation mechanisms of both ribbon and blocky borides are proposed.en
dc.description.sponsorshipGobierno Vascoes
dc.language.isoengen
dc.publisherMDPI AGen
dc.rights© 2020 by the authors. Licensee MDPI, Basel, Switzerlanden
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjecttitanium aluminideen
dc.subjectcastingen
dc.subjectborideen
dc.subjectcooling rateen
dc.subjectchemical compositionen
dc.titleEffect of Boron Content and Cooling Rate on the Microstructure and Boride Formation of β-Solidifying γ-TiAl TNM Alloyen
dc.typeinfo:eu-repo/semantics/articleen
dcterms.accessRightsinfo:eu-repo/semantics/openAccessen
dcterms.sourceMetalsen
dc.description.versioninfo:eu-repo/semantics/publishedVersionen
local.contributor.groupProcesos Avanzados de Conformación de Materialeses
local.description.peerreviewedtrueen
local.identifier.doihttps://doi.org/10.3390/met10050698en
local.relation.projectIDGV/Programa de apoyo a la I+D Empresarial Hazitek 2017/ZE-2017-00029/CAPV/Turbinas de Alta velocidad: Desarrollo de tecnologías de fabricación Avanzada/TALDEAen
local.rights.publicationfeeAPCen
local.rights.publicationfeeamount1493 EURen
local.contributor.otherinstitutionITP S.A.es
local.source.detailsVol. 10. N.5. N. artículo 698, 2020en


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Except where otherwise noted, this item's license is described as Attribution 4.0 International