Superelasticity, corrosion resistance and biocompatibility of the Ti-19Zr-10Nb-1Fe alloy

Materials Science & Engineering. C, Materials for Biological Applications
Pengfei XueChungen Zhou

Abstract

Microstructure, mechanical properties, superelasticity and biocompatibility of a Ti-19Zr-10Nb-1Fe alloy are investigated. X-ray diffraction spectroscopy and transmission electron microscopy observations show that the as-cast Ti-19Zr-10Nb-1Fe alloy is composed of α' and β phases, but only the β phase exists in the as-rolled and as-quenched alloys. The tensile stress-strain tests indicate that the as-quenched alloy exhibits a good combination of mechanical properties with a large elongation of 25%, a low Young's modulus of 59 GPa and a high ultimate tensile stress of 723 MPa. Superelastic recovery behavior is found in the as-quenched alloy during tensile tests, and the corresponding maximum of superelastic strain is 4.7% at the pre-strain of 6%. A superelastic recovery of 4% with high stability is achieved after 10 cyclic loading-unloading training processes. Potentiodynamic polarization and ion release measurements indicate that the as-quenched alloy shows a lower corrosion rate in Hank's solution and a much less ion release rate in 0.9% NaCl solution than those of the NiTi alloys. Cell culture results indicate that the osteoblasts' adhesion and proliferation are similar on both the Ti-19Zr-10Nb-1Fe and NiTi alloys. A better hem...Continue Reading

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Citations

Dec 27, 2015·Materials Science & Engineering. C, Materials for Biological Applications·Ivana KopovaLucie Bačákova
Oct 20, 2015·Materials Science & Engineering. C, Materials for Biological Applications·V SheremetyevS Dubinskiy
Oct 21, 2017·Scientific Reports·Conrado R M AfonsoVicente Amigó
Aug 14, 2021·Colloids and Surfaces. B, Biointerfaces·Yan WuYan Li

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