About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
On the Temperature and Strain Rate Dependency of Flow Stress of Ti834 |
Author(s) |
Maureen Aceves |
On-Site Speaker (Planned) |
Maureen Aceves |
Abstract Scope |
Ti-5.8Al-4.0Sn-3.5Zr-0.7Nb-0.5Mo-0.25Si-0.06C (Ti-834) is a near α alloy with microstructural stability up to 600 °C, currently used as high-pressure compressor discs due to its superior creep resistance and fatigue strength. Studies have been focused on investigating the flow stress at high temperatures at low rates. Nevertheless, high strain-rate tests are necessary to predict failure in representative environments. Therefore, this work investigates the flow stress behaviour under uniaxial compression loading at three different loading rates: 10-3 s-1 (quasi-static) in a conventional screw-driven machine, 10 s-1 (medium strain rate) in a high-speed hydraulic machine, and > 2000 s-1 (high strain rate) in a Split Hopkinson Bar (SHPB). The temperature range selected is from ambient temperature up to 850 °C. Microstructure examination is used to investigate the global deformation and local features such as adiabatic shear bands (ASB) are imaged on the SEM/EBSD. |
Proceedings Inclusion? |
Planned: |
Keywords |
Titanium, Characterization, High-Temperature Materials |