Influence of Thermal Oxidation on the Creep Behavior of Ti-6Al-4V Alloy
Tipo
Artigo
Data de publicação
2023
Periódico
Materials Research
Citações (Scopus)
0
Autores
Almeida G.F.C.
Arbex A.A.
Oliveira H.V.S.
Domingues N.I.
Vatavuk J.
Reis D.A.P.
Massi M.
Couto A.A.
Arbex A.A.
Oliveira H.V.S.
Domingues N.I.
Vatavuk J.
Reis D.A.P.
Massi M.
Couto A.A.
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Resumo
© 2023 Universidade Federal de Sao Carlos. All rights reserved.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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Assuntos Scopus
A-stable , Creep behaviors , Creep life , Mechanical , Oxidation conditions , Oxide layer , Thermal-oxidation , Ti-6al-4v alloy , XRD analysis