Microstructures and Elastic Moduli of Binary Titanium Alloys Containing Biocompatible Alloying Elements

Abstract:

New titanium alloys with a low elastic modulus have been developed for biomedical applications to avoid the stress shielding effect of an artificial prosthesis. The newly developed alloys contained the transition elements like Zr, Hf, Nb, Ta which were non-cytotoxicity elements and β stabilizers. In the present paper the elastic moduli of Ti-xM containing Zr, Hf, Nb, Ta were evaluated by measuring the velocity of supersonic wave (Pulse Echo Overlap). The effectiveness of the alloying elements for lowering the elastic modulus was investigated. In addition, the dominant factors for the low modulus were discussed. Ta was the most effective in lowering the elastic modulus of the alloys. The effectiveness of Hf was not acceptable for decreasing the elastic modulus. The dominant factor was the lattice parameter for Zr, and the poisson's ratio for Nb, Ta, respectively, in lowering the elastic modulus of Ti.

• Periodical: Materials Science Forum (Volumes 475-479)
• Pages: 2291-2294
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.475-479.2291
• Online since: January 2005
• Authors: Hi Won Jeong, Seung Eon Kim, Yong Taek Hyun, Yont Tai Lee, Joong Kuen Park
• Keywords: Biocompatible Alloying Element, Low Elastic Modulus, TiAl

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480 Lattice parameter, a (nm) The contents of alloying elements (wt%) Ti-xZr Ti-xHf Ti-xNb Ti-xTa Lattice parameter of c Lattice parameter, c (nm) 30 40 50 60 70 80 30 40 50 60 70 80 30 40 50 60 70 80 30 40 50 60 70 80 30 40 50 60 70 80 Ti-40Zr Ti-30Zr Ti-20Zr Ti-10Zr C P Ti D iffraction Angle (2 θθθθ) 10 15 20 25 30 35 40.

DOI: 10.31857/s2587-5566201923-19-9577

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42 Poisson's Ratio The Contents of Alloying Elements(wt%) WQ Ti-xZr WQ Ti-xHf FC Ti-xZr FC Ti-xHf 10 15 20 25 30 35 40.

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42 WQ Ti-xNb WQ Ti-xTa Poisson's Ratio The Contents of Alloing Elements(wt%) FC Ti-xNb FC Ti-xTa.

DOI: 10.14773/cst.2013.12.1.050