| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale V
|
| Presentation Title |
N-17: Role of Tantalum Concentration and Processing Temperature on Tensile Behavior of Nanocrystalline Copper-tantalum Alloys |
| Author(s) |
Soundarya Srinivasan, Chaitanya Kale, Scott Turnage, Billy Hornbuckle, Kris Darling, Kiran N Solanki |
| On-Site Speaker (Planned) |
Soundarya Srinivasan |
| Abstract Scope |
Microstructural instability in traditional nanocrystalline materials limits the understanding of the fundamental effect of nanocrystalline grain size on the mechanical behavior under extreme environmental conditions such as high temperatures and loading rates. In this work, we study the interplay between the Ta concentrations, and processing temperatures on the resulting microstructure of a powder processed Cu-Ta alloy along with the tensile behavior at different strain rates. Varying Ta concentration and processing temperature resulted in different micro-structured Cu-Ta alloys with grain sizes ranging from the nanocrystalline to the ultrafine-grained regimes. Transmission electron microscopy was used on the as-processed and the deformed samples to characterize the microstructure pre – and post – deformation. Results show that the Cu-Ta alloys having nanocrystalline grain size show increase in tensile ductility as the strain rate is increased from quasi-static (10-3 s-1) to dynamic (103 s-1) strain rates. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |