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

Autor(es)

Rafael Formenton Macedo dos Santos ^[1] ; Pedro Akira Bazaglia Kuroda ^[2] ; Carolina Neves Reis ^[3] ; Conrado Ramos Moreira Afonso ^[4]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 26, 2023-10-30.

Resumo

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)

• Processo FAPESP: 18/18293-8 - Ligas de titânio: transformações de fases e manufatura aditiva aplicadas na obtenção de materiais com gradientes funcionais
• Beneficiário: Rubens Caram Junior
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 19/26517-6 - Influência da microestrutura e fases formadas na funcionalização da superfície de ligas beta Ti-25Ta-xZr
• Beneficiário: Pedro Akira Bazaglia Kuroda
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 20/12431-0 - Caracterização de ligas beta de titânio de alta entropia multicomponentes com baixo módulo de elasticidade
• Beneficiário: Carolina Neves Reis
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica