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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ozaltin, Kadir
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2021Effects of chitosan/chondroitin sulfate polysaccharide lids on amoxicillin drug release from microcontainers
- 2020Cell response to PLA scaffolds functionalized with various seaweed polysaccharidescitations
- 2020Biodegradable porous polylactic acid film as a separator for supercapacitorscitations
- 2019Anticoagulant polyethylene terephthalate surface by plasma-mediated fucoidan immobilizationcitations
- 2019Investigation of different severe plastic deformation methods effect on Ti13Nb13Zr
- 2019Tribological behavior of a hydrostatically extruded ultra-fine grained Ti-13Nb-13Zr alloycitations
- 2018Preparation of active antibacterial biomaterials based on sparfloxacin, enrofloxacin, and lomefloxacin deposited on polyethylenecitations
- 2017Microstructure and Texture Evolutions of Biomedical Ti-13Nb-13Zr Alloy Processed by Hydrostatic Extrusioncitations
- 2017A novel multistep method for chondroitin sulphate immobilization and its interaction with fibroblast cellscitations
- 2016Mechanical properties, structural and texture evolution of biocompatible Ti–45Nb alloy processed by severe plastic deformationcitations
- 2014Enhancement of mechanical properties of biocompatible Ti-45Nb alloy by hydrostatic extrusioncitations
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article
Enhancement of mechanical properties of biocompatible Ti-45Nb alloy by hydrostatic extrusion
Abstract
<p>β-Type titanium alloys are promising materials for orthopaedic implants due to their relatively low Young's modulus and excellent biocompatibility. However, their strength is lower than those of α- or α + β-type titanium alloys. Grain refinement by severe plastic deformation (SPD) techniques provides a unique opportunity to enhance mechanical properties to prolong the lifetime of orthopaedic implants without changing their chemical composition. In this study, β-type Ti-45Nb (wt%) biomedical alloy in the form of 30 mm rod was subjected to hydrostatic extrusion (HE) to refine the microstructure and improve its mechanical properties. HE processing was carried out at room temperature without intermediate annealing in a multi-step process, up to an accumulative true strain of 3.5. Significant microstructure refinement from a coarse-grained region to an ultrafine-grained one was observed by optical and transmission electron microscopy. Vickers hardness measurements (HV<sub>0.2</sub>) demonstrated that the strength of the alloy increased from about 150 to 210 HV<sub>0.2</sub>. Nevertheless, the measurements of Young's modulus by nanoindentation showed no significant changes. This finding is substantiated by X-ray diffraction analyses which did not exhibit any phase transformation out of the bcc phase being present still before processing by HE. These results thus indicate that HE is a promising SPD method to obtain significant grain refinement and enhance strength of β-type Ti-45Nb alloy without changing its low Young's modulus, being one prerequisite for biomedical application. © 2014 The Author(s).</p>