Composition optimization of low modulus and high-strength TiNb-based alloys for biomedical applications

Okulov, I.V.; Volegov, A.S.; Attar, H.; Boenisch, M.; Ehtemam-Haghighi, S.; Calin, M.; Eckert, J.

Journalpaper

Composition optimization of low modulus and high-strength TiNb-based alloys for biomedical applications

Abstract

The effect of chemical composition on microstructure and tensile properties of a series of low modulus Ti-Nb-Cu-Ni-Al alloys was studied. These alloys consist of primary micrometer-sized β-Ti dendrites surrounded by intermetallic phases. The morphology of the intermetallic phases is strongly affected by composition. Due to the composite microstructure, the alloys exhibit a low Young's modulus (77–84 GPa) together with a high yield strength of about 1000 MPa as well as moderate tensile ductility. The results demonstrate that complete substitution of Al by Ti reduces the Young's modulus by 5%. Increasing Nb content at the expense of Ti causes a significant improvement of tensile ductility.

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URL: https://publications.hereon.de/id/34482/
Authors:Okulov, I.V., Volegov, A.S., Attar, H., Boenisch, M., Ehtemam-Haghighi, S., Calin, M., Eckert, J.
Year:2017
In: Journal of the Mechanical Behavior of Biomedical Materials
Volume:65
Pages:866 - 871
Publisher:Elsevier, Amsterdam
Type:Journalpaper
ISSN: 1751-6161
Cite as: Okulov, I.V.; Volegov, A.S.; Attar, H.; Boenisch, M.; Ehtemam-Haghighi, S.; Calin, M.; Eckert, J.: Composition optimization of low modulus and high-strength TiNb-based alloys for biomedical applications. In: Journal of the Mechanical Behavior of Biomedical Materials. Vol. 65 (2017) 866 - 871. (DOI: 10.1016/j.jmbbm.2016.10.013)