Mechanical properties and microstructural evolution of vacuum hot-pressed titanium and Ti-6Al-7Nb alloy

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Show simple item record Bolzoni, Leandro Ruiz Navas, Elisa María Neubauer, E. Gordo Odériz, Elena 2013-06-27T09:02:47Z 2013-06-27T09:02:47Z 2012-05
dc.identifier.bibliographicCitation Journal of the Mechanical Behavior of Biomedical Materials, (2012), v. 9, pp. 91-99.
dc.identifier.issn 1751-6161
dc.description.abstract Hot-pressing is a powder metallurgy process where loose powder is loaded into a mould, usually of graphite, and sintered by the simultaneous application of high temperature and pressure. In this study elemental titanium and Ti&-6Al&-7Nb alloy powders are hot-pressed under different conditions in order to study the influence of the processing parameters on the microstructure and mechanical properties. The samples are characterised in terms of relative density, microstructure, XRD, percentage of interstitials, three-point bending test and hardness. Relative densities as high as 99% are obtained, the oxygen and carbon content remains almost constant but nitrogen percentage increases. This is due to the interaction with the BN coated mould and leads to the formation of a reacted layer in the surface, composed by different titanium compounds, which greatly affect the mechanical properties. Nevertheless, the removal of this reacted layer leads to an important improvement of the ductility, especially for elemental titanium.
dc.description.sponsorship The authors are grateful for the financial support from the Comunidad de Madrid through the ESTRUMAT (S-2009/MAT–1585) project and from the Spanish Ministry of Education through the R&D Project MAT2009-14448-C02-02.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © Elsevier
dc.subject.other Vacuum hot-pressing
dc.subject.other Titanium alloys
dc.subject.other Ti 6Al 7Nb
dc.subject.other Bending properties
dc.subject.other BN-Ti interaction
dc.title Mechanical properties and microstructural evolution of vacuum hot-pressed titanium and Ti-6Al-7Nb alloy
dc.type article
dc.description.status Publicado
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.subject.eciencia Ingeniería Industrial
dc.identifier.doi 10.1016/j.jmbbm.2012.01.015
dc.rights.accessRights openAccess
dc.relation.projectID Comunidad de Madrid. S2009/MAT-1585/ESTRUMAT
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 91
dc.identifier.publicationlastpage 99
dc.identifier.publicationtitle Journal of the Mechanical Behavior of Biomedical Materials
dc.identifier.publicationvolume 9
dc.identifier.uxxi AR/0000010004
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