| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Microstructure and Mechanical Properties Evolution during the β-to-α and β-to-ω Transformations of Iron and Aluminum Modified Ti-11Cr(at.%) |
| Author(s) |
Joann Ballor, Jonathan Poplawsky, Arun Devaraj, Scott Misture, Carl J. Boehlert |
| On-Site Speaker (Planned) |
Carl J. Boehlert |
| Abstract Scope |
β-Ti alloys, Ti-11Cr, Ti-11Cr-0.85Fe, Ti-11Cr-5.3Al, and Ti-11Cr-0.85Fe-5.3Al (at.%) underwent a 400°C aging treatment for up to 12 hours to induce the β-to-ω and β-to-α phase transformations. Lattice parameters were measured in-situ using high-temperature X-ray diffraction. Phase compositions were measured ex-situ using atom probe tomography. The ω and α phases formed in Ti-11Cr. With the 0.85at.% Fe addition, the ω phase disappeared after 7.5 hours of aging. The 5.3at.% Al addition inhibited the ω-phase transformation. During aging, Cr and Fe diffused into the β phase, Ti diffused into the ω phase, and Ti and Al diffused into the α phase. In addition to the phase volume fractions, the tensile properties and Vicker’s microhardness changed with aging time and the overall microstructure and mechanical property evolution will be discussed with respect to the observed phase transformations. |
| Proceedings Inclusion? |
Planned: |