Effect of the substitutional elements on the microstructure of the Ti-15Mo-Zr and Ti-15Zr-Mo systems alloys

Autor(es)

Nespeque Correa, Diego Rafael ; Vicente, Fabio Bossoi ; Araujo, Raul Oliveira ; Lourenco, Mariana Luna ; Bazaglia Kuroda, Pedro Akira ; Rabelo Buzalaf, Marilia Afonso ; Grandini, Carlos Roberto

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 4, n. 2, p. 180-185, APR-JUN 2015.
• Citações Web of Science: 13

Resumo

Titanium alloys have excellent biocompatibility, and combined with their low elastic modulus, become more efficient when applied in orthopedic prostheses. Samples of Ti-15Mo-Zr and Ti-15Zr-Mo system alloys were prepared using an arc-melting furnace with argon atmosphere. The chemical quantitative analysis was performed using an optical emission spectrometer with inductively coupled plasma and thermal conductivity difference. The X-ray diffractograms, allied with optical microscopy, revealed the structure and microstructure of the samples. The mechanical analysis was evaluated by Vickers microhardness measurements. The structure and microstructure of alloys were sensitive to molybdenum and zirconium concentration, presenting alpha', alpha{''} and beta phases. Molybdenum proved to have greater beta-stabilizer action than zirconium. Microhardness was changed with addition of molybdenum and zirconium, having Ti-15Zr-10Mo (436 +/- 2 HV) and Ti-15Mo-10Zr (378 +/- 4 HV) the highest values in each system. (C) 2015 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda. All rights reserved. (AU)

• Processo FAPESP: 13/09063-5 - Efeito do elemento substitucional e do oxigênio intersticial na estrutura, microestrutura, em algumas propriedades mecânicas selecionadas e biocompatibilidade de ligas do sistema Ti-Mo-Zr
• Beneficiário: Raul Oliveira de Araújo
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/06221-1 - Desenvolvimento de uma nova liga do sistema Ti-Zr-Mo com baixo módulo de elasticidade para aplicações como biomaterial
• Beneficiário: Mariana Luna Lourenço
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica