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Beta type Ti–Mo alloys with changeable Young’s modulus for spinal fixation applications

Paper ID Volume ID Publish Year Pages File Format Full-Text
1091 74 1997 8 PDF Available
Title
Beta type Ti–Mo alloys with changeable Young’s modulus for spinal fixation applications
Abstract

To develop a novel biomedical titanium alloy with a changeable Young’s modulus via deformation-induced ω phase transformation for the spinal rods in spinal fixation devices, a series of metastable β type binary Ti–(15–18)Mo alloys were prepared. In this study, the microstructures, Young’s moduli and tensile properties of the alloys were systemically examined to investigate the effects of deformation-induced ω phase transformation on their mechanical properties. The springback of the optimal alloy was also examined. Ti–(15–18)Mo alloys subjected to solution treatment comprise a β phase and a small amount of athermal ω phase, and they have low Young’s moduli. All the alloys investigated in this study show an increase in the Young’s modulus owing to deformation-induced ω phase transformation during cold rolling. The deformation-induced ω phase transformation is accompanied with {3 3 2}β mechanical twinning. This resulted in the maintenance of acceptable ductility with relatively high strength. Among the examined alloys, the Ti–17Mo alloy shows the lowest Young’s modulus and the largest increase in the Young’s modulus. This alloy exhibits small springback and could be easily bent to the required shape during operation. Thus, Ti–17Mo alloy is considered to be a potential candidate for the spinal rods in spinal fixation devices.

Keywords
Biomaterials; Changeable Young’s modulus; Deformation-induced ω phase; Mechanical twinning; Springback
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Beta type Ti–Mo alloys with changeable Young’s modulus for spinal fixation applications
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 8, Issue 5, May 2012, Pages 1990–1997
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us