Composition optimization of low modulus and high-strength TiNb-based alloys for biomedical applications.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 27810733.
- Also identified by DOI 10.1016/j.jmbbm.2016.10.013.
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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.
Medical subject headings
- Materials Testing
- Niobium
- Titanium