Beta titanium alloys produced from titanium hydride: effect of alloying elements on titanium hydride decomposition

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dc.contributor.author Chirico Rodríguez, Caterina del Carmen
dc.contributor.author Tsipas, Sophia Alexandra
dc.contributor.author Wilczynski, Pablo
dc.contributor.author Gordo Odériz, Elena
dc.date.accessioned 2021-05-04T08:32:26Z
dc.date.available 2021-05-04T08:32:26Z
dc.date.issued 2020-05-22
dc.identifier.bibliographicCitation Metals 2020, 10(5), 682.
dc.identifier.issn 2075-4701
dc.identifier.uri http://hdl.handle.net/10016/32523
dc.description.abstract The use of titanium hydride as a raw material has been an attractive alternative for the production of titanium components produced by powder metallurgy, due to increased densification of Ti compacts, greater control of contamination and cost reduction of the raw materials. However, a significant amount of hydrogen that often remains on the samples could generate degradation of the mechanical properties. Therefore, understanding decomposition mechanisms is essential to promote the components' long life. Several studies on titanium hydride (TiH2) decomposition have been developed; nevertheless, few studies focus on the effect of the alloying elements on the dehydrogenation process. In this work, the effects of the addition of different amounts of Fe (5 and 7 wt. %) and Nb (12, 25, and 40 wt. %) as alloying elements were evaluated in detail. Results suggest that α→β transformation of Ti occurs below 800 °C; β phase can be observed at lower temperature than the expected according to the phase diagram. It was found that β phase transformation could take place during the intermediate stage of dehydrogenation. A mechanism was proposed for the effect of allying elements on the dehydrogenation process.
dc.description.sponsorship This research was funded by the Regional Government of Madrid (program ADITIMAT-CM, ref. S2018/NMT-4411), and by the Ministry of Economy and Competitiveness of Spain (program MINECO, ref. PCIN-2016-123 project BIOHYB, and Ramón y Cajal contract RYC-2014-1504).
dc.format.extent 19
dc.language.iso eng
dc.publisher MDPI
dc.rights © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Titanium hydride
dc.subject.other Beta titanium alloys
dc.subject.other Low-cost titanium alloys
dc.subject.other Dehydrogenation
dc.subject.other Phase transformation
dc.title Beta titanium alloys produced from titanium hydride: effect of alloying elements on titanium hydride decomposition
dc.type article
dc.description.status Publicado
dc.subject.eciencia Materiales
dc.identifier.doi https://doi.org/10.3390/met10050682
dc.rights.accessRights openAccess
dc.relation.projectID Comunidad de Madrid. S2018/NMT-4411/ADITIMAT-CM
dc.relation.projectID Gobierno de España. PCIN-2016-123/BIOHYB
dc.relation.projectID Gobierno de España. RYC-2014-1504
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 5(682)
dc.identifier.publicationlastpage 19
dc.identifier.publicationtitle Metals
dc.identifier.publicationvolume 10
dc.identifier.uxxi AR/0000025714
dc.contributor.funder Comunidad de Madrid
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.contributor.funder Ministerio de Ciencia e Innovación (España)
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