Journal article
An investigation of the mechanical behaviour of fine tubes fabricated from a Ti-25Nb-3Mo-3Zr-2Sn alloy
Materials and Design, Vol.85, pp.256-265
2015
Abstract
This study investigates the mechanical properties and the deformation mechanisms active in Ti-25Nb-3Mo-3Zr-2Sn fine tubes. Ti-25Nb-3Mo-3Zr-2Sn alloy is a recently developed metastable β titanium alloy intended for biomedical applications. Tensile tests were carried out on the fine tubes. The modulus of the Ti-25Nb-3Mo-3Zr-2Sn fine tubes increased with reductions in the diameter for tubes in the cold rolled and annealed conditions. In comparison with cold rolled tubes, the annealed tubes exhibit increased strain hardening behaviour and superior ductility. Mechanical twins, stress-induced martensitic transformation and the textures of the β and α″ phases were investigated. The results show that the fine tubes exhibit different moduli which are related to the evolution of β and α″ phase textures during processing. Cold rolling facilitates the transformation from β to the α″ phase and mechanical {332}〈113〉 twinning. For the annealed tubes, mechanical twinning as well as primary and secondary martensitic transformations were activated at specific levels of tensile strain. Twins developed with increasing levels of strain, and secondary martensitic transformations occurred within the twinned β regions. Annealed fine tubes exhibit multistage strain hardening behaviour and superior ductility due to the synergetic effects of twinning induced plasticity and transformation induced plasticity during tensile deformation.
Details
- Title
- An investigation of the mechanical behaviour of fine tubes fabricated from a Ti-25Nb-3Mo-3Zr-2Sn alloy
- Authors
- Yaowu Zhang (Author) - University of QueenslandDamon Kent (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and EngineeringGui Wang (Author) - University of QueenslandDavid St John (Author) - University of QueenslandMatthew Dargusch (Author) - University of Queensland
- Publication details
- Materials and Design, Vol.85, pp.256-265
- Publisher
- Elsevier Ltd.
- Date published
- 2015
- DOI
- 10.1016/j.matdes.2015.06.127
- ISSN
- 0264-1275
- Copyright note
- Copyright © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99449198202621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Web Of Science research areas
- Materials Science, Multidisciplinary