About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Oxygen, a Strengthening and Embrittling Element for Titanium Inherited from High Temperature Oxidation: A Multimodal Framework Using High Speed Nanoindentation Mapping |
Author(s) |
Damien Texier, Ayyoub Dziri, Quentin Sirvin, Thiebaud Richeton, Henry Proudhon, Marc Legros |
On-Site Speaker (Planned) |
Damien Texier |
Abstract Scope |
Titanium and its alloys have a strong ability to dissolve oxygen together with significant mechanical anisotropy. The present study evidenced change in elastic anisotropy and hardness properties of titanium enriched with oxygen up to 20 % atomic using multi-modal data merging techniques for high-throughput mechanical characterization. Mechanical properties were assessed using high speed nanoindentation techniques at the microscale and micropillar compression on pre-oxidized commercially pure titanium (CP-Ti). Combination with registered EBSD and EPMA data aimed at evidencing the relationship between hardness properties/ reduced modulus properties as a function of the declination angle and oxygen content. However, the reduced modulus is an apparent modulus representative of the multiaxial loading condition imposed by nanoindentation tips. Therefore, application of the Vlassak and Nix theory aimed at identifying the Cij terms of the stiffness matrix as a function of the oxygen content and fully investigate the anisotropy evolution of Ti within increasing oxygen. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Titanium, Environmental Effects |