| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Grain Boundaries, Interfaces, and Surfaces: Fundamental Structure-Property-Performance Relationships
|
| Presentation Title |
Identifying Subgrain Boundary Migration Behavior at Early Stage Recrystallization |
| Author(s) |
Zehua Liu, Marc DeGraef |
| On-Site Speaker (Planned) |
Zehua Liu |
| Abstract Scope |
The combination of a heating stage with a sensitive low KeV EBSD detector along with a robust dictionary indexing algorithm makes it possible to perform in-situ recrystallization studies of deformed high-purity Aluminum with high spatial resolution.The acquired EBSD datasets are indexed using EMsoft dictionary method and post processing with Kuwahara filter to identify subgrain boundaries. High resolution mapping of the relatively heavily deformed high Aluminum provided insights into how the deformed state evolves and the how the subgrain boundaries migrates at the early stages of the recrystallization. The subgrains boundaries are surprisingly active during the cycled thermalshot annealing process and individual subgrains exhibit different grow kinetics. Localized kinetics of the abnormal grew subgrain boundaries will be presented with a hypothesised theory explaining the behavior of the migration of subgrain boundaries. |