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Article Dans Une Revue Oxidation of Metals Année : 2021

Comparison Between the Oxidation Behaviors of Ti6242S, Ti6246, TiXT Alloys, and Pure Titanium

Résumé

Isothermal oxidation tests were performed on Ti6242S (Ti-6% Al-2% Sn-4% Zr-2% Mo, 0.08% Si), Ti6246 (Ti-6% Al-2% Sn-4% Zr-6% Mo, 0.05% Si), TiXT (Ti-0.45% Si) alloys and pure titanium in laboratory air at 560 °C, 600 °C and 650 °C for 1000 h to compare their oxidation behaviors. This study aims to highlight the role of molybdenum and silicon in the oxidation resistance of titanium alloys. The results show that 6 wt.% of Mo in Ti6246 alloys does not substantially change the oxidation behavior compared to Ti6242S alloy containing only 2 wt.% of Mo. Meanwhile, the presence of 0.45 wt.% Si seems to be clearly beneficial for the oxidation resistance, reducing the parabolic rate constant by a factor larger than 2 as compared to pure titanium.
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hal-04012444 , version 1 (10-03-2023)

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Benjamin Vincent, Virgil Optasanu, Frédéric Herbst, Sébastien Chevalier, Ioana Popa, et al.. Comparison Between the Oxidation Behaviors of Ti6242S, Ti6246, TiXT Alloys, and Pure Titanium. Oxidation of Metals, 2021, 96 (3-4), pp.283-294. ⟨10.1007/s11085-021-10051-w⟩. ⟨hal-04012444⟩
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