Influence of thermal oxidation on the creep behavior of Ti-6Al-4V alloy
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The formation of a stable and adherent oxide layer on the Ti-6Al-4V alloy can improve the mechanical and corrosion resistance of this material. This work studied the creep behavior of Ti-6Al-4V alloy after two different thermal oxidation conditions: at 650 °C for 12 h and at 800 °C for 2 h. In the XRD analysis of the oxidized samples, it was possible to observe the formation of rutile (TiO2) and a displacement of the peaks of α and β phases caused by the dissolution of oxygen. In the creep test at 550 °C, the material oxidized at 800 °C for 2 h showed a greater creep life at 125 MPa, the crack took longer to brake probably due to the greater thickness of the layer. At 550°C and 187.5 MPa the material oxidized at 650 °C for 12h has a better creep life, probably due to the layer more adhered.
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ALMEIDA, GISELE F.C.; ARBEX, ALEXANDRA A.; OLIVEIRA, HAMON V.S.; DOMINGUES, NILTON I.; VATAVUK, JAN; REIS, DANIELI A.P.; MASSI, MARCOS; COUTO, ANTONIO A. Influence of thermal oxidation on the creep behavior of Ti-6Al-4V alloy. Materials Research, v. 26, p. 1-9, 2023. Suppl.1. DOI: 10.1590/1980-5373-MR-2022-0521. Disponível em: http://repositorio.ipen.br/handle/123456789/34361. Acesso em: 30 Dec 2025.
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