%0 journal article %@ 1751-6161 %A Okulov, I.V.,Volegov, A.S.,Attar, H.,Boenisch, M.,Ehtemam-Haghighi, S.,Calin, M.,Eckert, J. %D 2017 %J Journal of the Mechanical Behavior of Biomedical Materials %N %P 866-871 %R doi:10.1016/j.jmbbm.2016.10.013 %T Composition optimization of low modulus and high-strength TiNb-based alloys for biomedical applications %U https://doi.org/10.1016/j.jmbbm.2016.10.013 %X 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.