| Texto completo | |
| Autor(es): |
Tito Patricio, M. A.
[1, 2]
;
Lustosa, C. J. R.
[3]
;
Chaves, J. A. M.
[4]
;
Marques, P. W. B.
[2]
;
Silva Jr, P. S.
;
Almeida, A.
[5]
;
Vilar, R.
[5]
;
Florencio, O.
[6, 3]
Número total de Autores: 8
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Phys, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Prebiteriana Mackenzie, Engn Sch, BR-01302907 Sao Paulo, SP - Brazil
[4] Comfacauca Univ Corp, Dept Mechatron Engn, Popayan Campus, Popayan - Colombia
[5] Univ Lisbon, Ctr Phys & Engn Adv Mat, Inst Super Tecn, Lisbon - Portugal
[6] Silva Jr, Jr., P. S., Univ Fed Sao Carlos, Dept Phys, BR-13565905 Sao Carlos, SP - Brazil
Número total de Afiliações: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 14, p. 210-219, SEP-OCT 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
Titanium and Ti alloys are important materials for scientific and technological applications, especially as biomaterials, due to their excellent corrosion resistance, biocompatibility, and mechanical properties. In this work, the influence of tantalum on the microstructure and mechanical properties of Ti-40Ta alloys were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and mechanical spectroscopy (MS) techniques. XRD and SEM analyses showed that commercially pure (CP) Ti consists of a single alpha-phase (hcp) with an equiaxed morphology, while Ti-40Ta alloy consists of alpha `' (orthorhombic) and beta (bcc) phases. The anelastic relaxation spectra of Ti-40Ta alloy presented characteristics combining CP Ti and pure Ta anelastic responses, where the complex anelastic relaxation peaks observed around 575 and 680 K could be resolved into matrix-interstitial and substitutional-interstitial components, corresponding to Ta-O, Ti-O, and Ta-N single interactions. The combination of thermal cycles and applied stress during the mechanical spectroscopy characterization of Ti-40Ta alloy promotes the alpha `' -> beta phase transition until beta phase stabilization. From flexural vibration measurements, the elastic modulus values at room temperature were: (102 +/- 9) GPa for CP Ti and (71 +/- 5) GPa for the Ti-40Ta alloy. These results provide a valuable contribution to a better understanding of the structure and mechanical properties of the Ti-40Ta alloy, thus allowing the optimization of its properties through thermal treatments, aiming at its potential application as a biomaterial for structural orthopedic applications. (C) 2021 The Author(s). Published by Elsevier B.V. (AU) | |
| Processo FAPESP: | 01/14992-8 - Espectroscopia mecanica em materiais. |
| Beneficiário: | Odila Florêncio |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 11/20151-8 - Desenvolvimento assistido por laser de novas ligas de titânio para aplicações ortopédicas |
| Beneficiário: | Odila Florêncio |
| Modalidade de apoio: | Bolsas no Exterior - Pesquisa |