| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Grain Boundaries and Interfaces: Metastability, Disorder, and Non-Equilibrium Behavior
|
| Presentation Title |
Influence of Contaminates on Nanocrystalline Thermomechanical Stability |
| Author(s) |
Jonathan L. Priedeman, B. Chad Hornbuckle, Kristopher A. Darling, Sean J. Fudger, Gregory B. Thompson |
| On-Site Speaker (Planned) |
Gregory B. Thompson |
| Abstract Scope |
Nanocrystalline alloys have received considered interest owing to their high strength with reduced grain size. Upon thermal and/or mechanical loading, these nanocrystalline grains can coarsen with strategies to mitigate this growth achieved by the partitioning of specific solutes to the grain boundaries. In this work, we discuss how the solute selection and its interaction with impurities influences the mechanisms of stability and mechanical performance. We report this behavior using different Cu-based nanocrystalline alloys that have been fabricated by cryogenic ball milling and subsequent powder consolidation. The reactivity of the solute with the contaminate species found in the processed alloys creates specific clusters/precipitates and, in certain situations, the reactive product has a profound impact on the thermo-mechanical behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, Powder Materials |