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dc.contributor.authorGuillem Martí, Jordi
dc.contributor.authorHerranz-Diez, Carolina
dc.contributor.authorShaffer, J.E.
dc.contributor.authorGil Mur, Francisco Javier
dc.contributor.authorManero Planella, José María
dc.date.accessioned2020-05-11T14:27:11Z
dc.date.available2020-05-11T14:27:11Z
dc.date.issued2015-06-11
dc.identifier.citationGuillem Martí, Jordi; Herranz-Diez, Carolina; Shaffer, J.E. [et al.]. Mechanical and microstructural characterization of new nickel-free low modulus beta-type titanium wires during thermomechanical treatments. Materials Science and Engineering: A, 2015, 636, p. 507-515. Disponible en: <https://www.sciencedirect.com/science/article/abs/pii/S0921509315003020?via%3Dihub>. Fecha de acceso: 11 may. 2020. DOI: 10.1016/j.msea.2015.03.060.ca
dc.identifier.issn0921-5093ca
dc.identifier.urihttp://hdl.handle.net/20.500.12328/1519
dc.description.abstractNiTi alloy is the only practical shape memory alloy (SMA) in biomedical use because of its excellent mechanical stability and functionality. However, it is estimated that between 4.5% and 28.5% of the population are hypersensitive to nickel metal, with a higher prevalence in females. Therefore, developing nickel-free low modulus beta-type titanium alloys showing shape memory or super elastic behavior would have a great interest in the biomaterials field. Homogeneous 127 mu m diameter Ti25Hf21Nb wires were produced and compared to straight annealed Ti-50.8 at% Ni (Nitinol) and 90% cold-drawn 316L wires. Microstructural changes taking place during the heat treatment of cold-worked Ti25Hf21Nb wires were investigated. Large plastic deformation during wire drawing and subsequent annealing led to nano-crystallization and amorphization which may contribute to the observed superelasticity. Mechanical properties were characterized using cyclic uniaxial tension and rotary beam fatigue test modes. A modulus of elasticity of less than 60 GPa and axial recoverable strain of greater than 3% were observed with stress hysteresis resembling a reversible stress-induced martensitic transformation at higher temperatures. The new Ti25Hf21Nb alloy is an important candidate for developing Ni-free SMAs in the future.ca
dc.format.extent33ca
dc.language.isoengca
dc.publisherElsevierca
dc.relation.ispartofMaterials Science and Engineering: Aca
dc.relation.ispartofseries636;
dc.rights© 2015 Elsevier B.V. All rights reserved.ca
dc.subject.otherAliatgesca
dc.subject.otherElasticitat
dc.subject.otherMaterials biomèdics
dc.subject.otherTitani -- Aliatges
dc.subject.otherAleaciones
dc.subject.otherElasticidad
dc.subject.otherMateriales biomédicos
dc.subject.otherTitanio -- Aleaciones
dc.subject.otherAlloys
dc.subject.otherElasticity
dc.subject.otherBiomedical materials
dc.subject.otherTitanium alloys
dc.titleMechanical and microstructural characterization of new nickel-free low modulus beta-type titanium wires during thermomechanical treatmentsca
dc.typeinfo:eu-repo/semantics/articleca
dc.description.versioninfo:eu-repo/semantics/acceptedVersionca
dc.embargo.termscapca
dc.subject.udc62ca
dc.identifier.doihttp://dx.doi.org/10.1016/j.msea.2015.03.060ca


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