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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of Hot Rolling on β Ti-Nb-Zr(-Ta) Multiprincipal Alloys for Biomedical Application

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Author(s):
Rafael Formenton Macedo dos Santos [1] ; Pedro Akira Bazaglia Kuroda [2] ; Carolina Neves Reis [3] ; Conrado Ramos Moreira Afonso [4]
Total Authors: 4
Affiliation:
[1] Universidade Federal de São Carlos. Programa de Pós-Graduação em Ciência e Engenharia de Materiais - Brasil
[2] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
[3] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
[4] Universidade Federal de São Carlos. Departamento de Engenharia de Materiais - Brasil
Total Affiliations: 4
Document type: Journal article
Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 26, 2023-10-30.
Abstract

With increasing life expectancy, revision surgeries have become more frequent in implanted people. This is due to the biological and biomechanical incompatibility that generates, among others, problems such as stress shielding. This works aims to analyze the influence of the hot rolling process (HR sample) on the microstructure and, consequently, the properties of β-Ti multiprincipal alloys: Ti-27Nb-39Zr (39Zr), Ti-30Nb-50Zr (50Zr), and Ti-20Nb-30Zr-13Ta (30Zr) (wt. %.) (equimassic and with high content of β-stabilizer elements). All samples were subjected to characterization through X-ray diffraction (XRD) to determine the phases present, and optical microscopy (OM) and scanning electronic microscopy (SEM) were realized to characterize the microstructure and confirm the phases obtained through XRD. Before hot rolling, only the β phase was identified, but in the HR condition, the α and β phases were identified. Consequently, it did not observe significant changes in microhardness for all alloys, while the elastic modulus was observed with a reduction of 23% for 39Zr, 46% for 40Zr, and 13% for 30Zr. The hot rolling processing was confirmed to be a helpful route to reduce the elastic modulus for β Ti multiprincipal alloys opening perspectives for applying such alloys as metallic implant materials. (AU)

FAPESP's process: 20/12431-0 - Characterization of multicomponent beta titanium alloys with low elastic modulus
Grantee:Carolina Neves Reis
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 18/18293-8 - Titanium alloys: phase transformations and additive manufacturing applied to obtaining functionally graded materials
Grantee:Rubens Caram Junior
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 19/26517-6 - Influence of the microstructure and phases on surface functionalization of beta Ti-25Ta-xZr- alloys system
Grantee:Pedro Akira Bazaglia Kuroda
Support Opportunities: Scholarships in Brazil - Post-Doctoral