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

Authors :: Okulov IV
Volegov AS
Attar H
Bönisch M
Ehtemam-Haghighi S
Calin M
Eckert J
Source :: Journal of the mechanical behavior of biomedical materials [J Mech Behav Biomed Mater] 2017 Jan; Vol. 65, pp. 866-871. Date of Electronic Publication: 2016 Oct 20.
Publication Year :: 2017
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 (77-84GPa) together with a high yield strength of about 1000MPa 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.<br /> (Copyright © 2016 Elsevier Ltd. All rights reserved.)

Subjects :: Alloys
Elastic Modulus
Tensile Strength
Materials Testing
Niobium analysis
Titanium analysis

Full Text Access

Tools