Per: PEDRO AKIRA BAZAGLIA KURODA (Univ. federal de são carlos - UFSCAR), Barbara Letícia tomaz Pedroso (Univ. Estadual Paulista - UNESP), Conrado Ramos Moreira Afonso (UNIV. FEDERAL DE SÃO CARLOS - UFSCAR), Carlos roberto grandini (UNIV. ESTADUAL PAULISTA - UNESP)
Abstract:
This paper deals with the study of the development and structural characterization, microstructural, and selected mechanical properties of Ti-25Ta-50Zr alloy for biomedical applications. The alloy was melted in an arc-volt furnace, after melting the ingot was submitted to a mechanical hot-rolling process and annealing heat treatment. The alloy after hot-rolling has a BETA-type structure and after annealing, the alloy presented a small amount of αlpha and omega phases. After annealing, the αlpha phase appears due to the slow cooling of the material inducing the formation of the αlpha phase in Titanium alloys. Regarding the hardness, the alloys have high hardness values due to hardening by solid solution and the precipitation of phases. The modulus of elasticity of commercially pure titanium is three times larger than human cortical bone, whereas Ti-25Ta-50Zr has an excellent modulus of elasticity results, where the difference in modulus value, material/bone, falls to only twice in rolled condition, indicating that the material can be used in the biomedical area