dc.contributor.author | Guillem Martí, Jordi | |
dc.contributor.author | Herranz-Diez, Carolina | |
dc.contributor.author | Shaffer, J.E. | |
dc.contributor.author | Gil Mur, Francisco Javier | |
dc.contributor.author | Manero Planella, José María | |
dc.date.accessioned | 2020-05-11T14:27:11Z | |
dc.date.available | 2020-05-11T14:27:11Z | |
dc.date.issued | 2015-06-11 | |
dc.identifier.citation | Guillem 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.issn | 0921-5093 | ca |
dc.identifier.uri | http://hdl.handle.net/20.500.12328/1519 | |
dc.description.abstract | NiTi 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.extent | 33 | ca |
dc.language.iso | eng | ca |
dc.publisher | Elsevier | ca |
dc.relation.ispartof | Materials Science and Engineering: A | ca |
dc.relation.ispartofseries | 636; | |
dc.rights | © 2015 Elsevier B.V. All rights reserved. | ca |
dc.subject.other | Aliatges | ca |
dc.subject.other | Elasticitat | |
dc.subject.other | Materials biomèdics | |
dc.subject.other | Titani -- Aliatges | |
dc.subject.other | Aleaciones | |
dc.subject.other | Elasticidad | |
dc.subject.other | Materiales biomédicos | |
dc.subject.other | Titanio -- Aleaciones | |
dc.subject.other | Alloys | |
dc.subject.other | Elasticity | |
dc.subject.other | Biomedical materials | |
dc.subject.other | Titanium alloys | |
dc.title | Mechanical and microstructural characterization of new nickel-free low modulus beta-type titanium wires during thermomechanical treatments | ca |
dc.type | info:eu-repo/semantics/article | ca |
dc.description.version | info:eu-repo/semantics/acceptedVersion | ca |
dc.embargo.terms | cap | ca |
dc.subject.udc | 62 | ca |
dc.identifier.doi | http://dx.doi.org/10.1016/j.msea.2015.03.060 | ca |