| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification Science VIII
|
| Presentation Title |
Orientation Relationships between Al3Ti and TiB2 due to Nucleation and Pushing/Engulfment |
| Author(s) |
Yi Cui, Andrew P. Horsfield, Christopher M. Gourlay |
| On-Site Speaker (Planned) |
Christopher M. Gourlay |
| Abstract Scope |
Orientation relationships (ORs) can form during solidification by a variety of mechanisms that are often difficult to distinguish after solidification. Here we study ORs formed between faceted Al3Ti and TiB2 by heterogeneous nucleation and by the pushing and engulfment of TiB2. Nucleation ORs are studied by growing large TiB2 crystals, solidifying multiple small Al3Ti crystals on the (0001) facet of TiB2, and measuring the resulting ORs by electron backscatter diffraction (EBSD). Pushing and engulfment ORs are investigated by statistical analysis of EBSD measurements, density functional theory (DFT) calculations of interface energies, and imaging of cross-sections of TiB2 particles being pushed and engulfed by Al3Ti facets. |
| Proceedings Inclusion? |
Planned: |