| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
An Atoms to Autos Approach for Materials Innovations for Lightweighting: An LMD Symposium in Honor of Anil K. Sachdev
|
| Presentation Title |
Influence of Length Scale on the Kinetics of Phase Transformation and Microstructure Evolution during Field-Assisted Sintering and Severe Plastic Deformation |
| Author(s) |
Enrique J. Lavernia, Kaustubh Kulkarni, Anil K. Sachdev |
| On-Site Speaker (Planned) |
Enrique J. Lavernia |
| Abstract Scope |
Titanium alloys possess desirable properties, including low density, high strength at elevated temperatures (∼950 °C), and excellent corrosion resistance, making them crucial for the automotive industry. To address their high costs, cost-effective processing methods such as producing high-performance alloys and components from blended elemental powders are being studied.
This study examines the kinetics of phase evolution and microstructure changes during spark plasma sintering (SPS) and high-pressure torsion (HPT) of cryomilled Ti and Al powder mixtures, as well as phase transformations and microstructural evolution using scanning electron microscopy (SEM), transmission electron microscopy/high-resolution transmission electron microscopy (TEM/HRTEM), and X-ray diffraction (XRD) techniques.
The results show that phase transformation and microstructural changes are influenced by the high density of lattice defects generated under the combined thermal and strain conditions present during SPS and HPT processing. Our results provide insights into the mechanisms underlying the evolution of the microstructure and phase constituents during processing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Process Technology, Phase Transformations |