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Article Dans Une Revue Corrosion Science Année : 2024

Effect of oxygen dissolution on the mechanical behavior of thin Ti-6Al-4V specimens oxidized at high temperature: Experimental and modelling approach

Damien Texier
Abhishek Palchoudhary
J. Genée
Quentin Sirvin
Daniel Monceau
Dominique Poquillon

Résumé

Micromechanical characterization of the oxygen-rich layer (ORL) of a Ti-6Al-4V alloy due to high-temperature oxidation was investigated at room temperature. The tensile strength of the pre-oxidized specimens linearly decreased as a function of the surface fraction of ORL in relation to the gage section, demonstrating a competition between oxygen strengthening and embrittlement. Electron-probe microanalyses and nanoindentation testing aimed at locally assessing the elastic and hardness response of the material as a function of the oxygen content. These properties were used in finite element simulations to quantify stress profiles within the oxygen-graded material for different ORL thickness/specimen thickness couples.
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hal-04601530 , version 1 (09-06-2024)

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Damien Texier, Abhishek Palchoudhary, J. Genée, Quentin Sirvin, Yinyin Zhang, et al.. Effect of oxygen dissolution on the mechanical behavior of thin Ti-6Al-4V specimens oxidized at high temperature: Experimental and modelling approach. Corrosion Science, 2024, 235, pp.112177. ⟨10.1016/j.corsci.2024.112177⟩. ⟨hal-04601530⟩
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