About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Thermo-Mechanical Processing of Refractory Alloys
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| Presentation Title |
Influence of Combined Thermal and Mechanical Processes on the Recrystallization of Ta–W Alloys |
| Author(s) |
Roger Qiu, Paul Paradise, Rohini Sankaran, Matthew Koelle, Joe Boro, Sharon Torres, Joe McKeown, Yong Han |
| On-Site Speaker (Planned) |
Roger Qiu |
| Abstract Scope |
Refractory alloys, such as Ta-W, are essential for demanding environments due to their superior chemical, mechanical, and thermal properties. The microstructural evolution and resulting physical properties of these alloys are highly sensitive to thermomechanical processing conditions. This study systematically examines how cold-rolling reduction, thermal annealing, and annealing duration affect the microstructure, grain size, and mechanical performance of Ta-W alloys. Using advanced techniques, including EBSD, DSC, and EPMA, we analyze the influence of stored energy (by grain orientation) on recrystallization kinetics, determine recrystallization onset temperatures, and assess chemical homogeneity. Combined with comprehensive mechanical testing, we quantitatively correlate processing parameters with microstructural features and alloy performance. These findings provide a scientific foundation for optimizing thermomechanical processing to tailor microstructures and enhance the functional properties of Ta-W alloys for advanced engineering applications.
This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, Characterization |