Microstructure and selected mechanical properties of aged Ti-15Zr-based alloys for biomedical applications

Autor(es)

Correa, D. R. N. ^{[1, 2]} ; Kuroda, P. A. B. ^{[1, 3]} ; Lourenco, M. L. ^{[1, 3]} ; Buzalaf, M. A. R. ^[4] ; Mendoza, M. E. ^{[5, 6]} ; Archanjo, B. S. ^[5] ; Achete, C. A. ^[5] ; Rocha, L. A. ^{[1, 3]} ; Grandini, C. R. ^{[1, 3]}

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Lab Anelasticidade & Biomat, BR-17033360 Bauru, SP - Brazil

^[2] Fed Inst Educ Sci & Technol IFSP, BR-18095410 Sorocaba, SP - Brazil

^[3] Inst Biomat Tribocorros & Nanomed, Brazilian Branch IBTN Br, BR-17033360 Bauru, SP - Brazil

^[4] Univ Sao Paulo, Fac Odontol, Dept Ciencias Biol, BR-17012901 Bauru, SP - Brazil

^[5] Natl Inst Metrol Qual & Technol, Metrol Mat Div INMETRO, BR-25250020 Duque De Caxias, RJ - Brazil

^[6] Univ Pedag & Tecnol Colombia, Grp Invest Mat Siderurg, Boyaca 150003 - Colombia

• Tipo de documento: Artigo Científico
• Fonte: Materials Science & Engineering C-Materials for Biological Applications; v. 91, p. 762-771, OCT 1 2018.
• Citações Web of Science: 5

Resumo

In this study, Ti-15Zr-xMo (5, 10, 15, and 20 wt%) alloys were submitted to solution and aging treatments and their effects evaluated in terms of phase composition and selected mechanical properties (Vickers microhardness and Young's modulus) for use as biomedical implants. The solution treatment was performed at 1123 K for 2 h, while aging treatments were carried out at 698 K for 4, 8, and 12 h, followed by water quenching. Phase composition and microstructure were dependent of the heat treatments, with Ti-15Zr-5Mo (alpha + beta type) and Ti-15Zr-10Mo (metastable beta type) alloys exhibiting intense alpha phase precipitation. The alpha-phase precipitates were related to alpha `' -> alpha and beta -> alpha phase decompositions. The Ti-15Zr-10Mo alloy exhibited an intermediary isothermal omega-phase precipitation after aging for 4 h. Vickers microhardness and Young's modulus values changed gradually with the amount of alpha phase. Aged Ti-15Zr-15Mo and Ti-15Zr-20Mo alloys presented better combinations of hardness and Young's modulus than CP-Ti and Ti-64 ELI for biomedical applications. (AU)

• Processo FAPESP: 10/20440-7 - Efeito de elementos substitucionais e intersticiais nas propriedades mecânicas e biocompatibilidade de ligas do sistema Ti-15Zr-xMo
• Beneficiário: Diego Rafael Nespeque Correa
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 14/22689-3 - Sinalização parácrina mediada por microvesículas e proteínas entre células ósseas e endoteliais durante o desenvolvimento e regeneração do tecido ósseo
• Beneficiário: Willian Fernando Zambuzzi
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 15/00851-6 - Biofuncionalização da liga Ti-15Zr com a adição de molibdênio e diferentes modificações de superfície
• Beneficiário: Diego Rafael Nespeque Correa
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado