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Assessment of a Superelastic Beta TiMo Alloy for Biomedical Applications

By M. H. Wu


The paper reviews the unique metallurgical features, corrosion resistance and biocompatibility of a beta TiMo based alloy for assessing its potentials as a biomaterial. TiMo based alloys at critical beta stability exhibit nonlinear pseudoelasticity. These alloys in cold worked condition also exhibit greatly extended linear elasticity and a low modulus much more closely matching those of human hard tissues. Wires fabricated from a TiMo based alloy of Ti-9.7Mo-4Nb-2V-3Al were studied. At the optimal processing condition, a recoverable strain as high as 3.5 % can be achieved in both beta annealed as well as cold worked conditions. Other mechanical properties are discussed with respects to chemical composition and processing history. The unique elastic behavior and excellent corrosion resistance and biocompatibility suggest promising potentials of the alloy for biomedical applications

Year: 2009
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