| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Understanding The Influence of Interfaces on Grain Nucleation in Highly Textured Mg-(Zn, Ca) Alloys During Static Recrystallization |
| Author(s) |
Rogine Gomez, Aeriel Leonard |
| On-Site Speaker (Planned) |
Rogine Gomez |
| Abstract Scope |
Deformation twinning plays a significant role during deformation of magnesium alloys due to its limited number of independent slip systems. Extension twinning contributes most significantly to c-axis deformation. During mechanical loading, these twins can serve as stress concentrators that act as preferential nucleation sites for new, strain-free, recrystallized grains during annealing. In this study, the microstructural and texture evolution of Mg-(Zn,Ca) alloys was quantified using a combination of in-situ heating, EBSD, and electron microscopy. The objective is to understand the influence of recrystallization and grain growth on crystallographic texture development in these alloys. TEM was used to understand the dislocation structure near twin boundaries, near other microstructural interfaces, and inside of twins. It was determined that binary alloys develop a strong basal texture during wrought processing that weakens during recrystallization. It was also found that twin boundaries served as preferential nucleation sites during the initial stages of recrystallization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Characterization, Phase Transformations |