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Mechanical and microstructural characterization of new nickel-free low modulus beta-type titanium wires during thermomechanical treatments
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.contributor.other | Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica |
dc.date.accessioned | 2015-11-13T12:22:26Z |
dc.date.available | 2017-06-13T00:30:41Z |
dc.date.issued | 2015-06-11 |
dc.identifier.citation | Guillem-Marti, J., Herranz-Diez, C., Shaffer, J., Gil, F.J., Manero, J. Mechanical and microstructural characterization of new nickel-free low modulus beta-type titanium wires during thermomechanical treatments. "Materials science and engineering A. Structural materials properties microstructure and processing", 11 Juny 2015, vol. 636, p. 507-515. |
dc.identifier.issn | 0921-5093 |
dc.identifier.uri | http://hdl.handle.net/2117/79230 |
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. (C) 2015 Elsevier B.V. All rights reserved. |
dc.format.extent | 9 p. |
dc.language.iso | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials |
dc.subject.lcsh | Nickel-titanium alloys |
dc.subject.other | Nickel-free titanium alloys |
dc.subject.other | Pseudo-elasticity |
dc.subject.other | Low elastic modulus |
dc.subject.other | Wires |
dc.subject.other | Large plastic deformation |
dc.subject.other | severe plastic-deformation |
dc.subject.other | shape-memory alloy |
dc.subject.other | local canning compression |
dc.subject.other | high-pressure torsion |
dc.subject.other | nb-hf alloy |
dc.subject.other | phase-transformation |
dc.subject.other | nanocrystalline materials |
dc.subject.other | biomedical applications |
dc.subject.other | biocompatibility |
dc.subject.other | behavior |
dc.title | Mechanical and microstructural characterization of new nickel-free low modulus beta-type titanium wires during thermomechanical treatments |
dc.type | Article |
dc.subject.lemac | Aliatges lleugers |
dc.subject.lemac | Níquel-titani -- Aliatges |
dc.contributor.group | Universitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits |
dc.identifier.doi | 10.1016/j.msea.2015.03.060 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0921509315003020 |
dc.rights.access | Open Access |
local.identifier.drac | 16674504 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Guillem-Marti, J.; Herranz-Diez, C.; Shaffer, J.; Gil, F.J.; Manero, J. |
local.citation.publicationName | Materials science and engineering A. Structural materials properties microstructure and processing |
local.citation.volume | 636 |
local.citation.startingPage | 507 |
local.citation.endingPage | 515 |
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