About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification X
|
| Presentation Title |
Three-Phase Anisotropic Eutectic Grains |
| Author(s) |
Samira Mohagheghi, Ulrike Hecht, Melis Serefoglu |
| On-Site Speaker (Planned) |
Melis Serefoglu |
| Abstract Scope |
Three-phase eutectics exist in various microstructures, and the presence of at least two crystal/crystal interphases not only adds richness to these complex microstructures but also makes their evolution highly sensitive to the anisotropy in phase boundary energy. Depending on the orientation of eutectic phases with respect to each other and with respect to the growth direction, different microstructures form. In this work, firstly, eutectic grains are classified as a function of crystal/crystal anisotropy using In-Bi-Sn alloy at the invariant point, rotating directional solidification setup, and EBSD. Specifically, microstructures observed as a function of crystal orientation relationships are reported. Secondly, one of the eutectic phases was found to undergo an orientation change during growth via twinning, while still preserving an orientation relationship with the adjacent phases. To the best of our knowledge, this represents the first reported instance of growth twinning in a non-faceted crystal driven by phase boundary energy anisotropy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Characterization, Phase Transformations |