| About this Abstract |
| Meeting |
TMS Specialty Congress 2025
|
| Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
| Presentation Title |
Characterizing Nanoscale Ordering Using Bragg Coherent Diffraction Imaging |
| Author(s) |
Nathan Warren, Chloe Skidmore, Wonsuk Cha , Katherine Harmon, Jon-Paul Maria, Stephan Hruszkewycz, Darren C. Pagan |
| On-Site Speaker (Planned) |
Darren C. Pagan |
| Abstract Scope |
The amount of local ordering in many metallic alloys is sensitive to the thermal processing route that they have undergone. Of current importance for alloy design is controlling this ordering to optimize an alloy’s mechanical properties for a desired application. However, before ordering can be controlled, new means to quantitatively characterize its presence are needed as this remains an on-going challenge. In this study, we use Bragg coherent diffraction imaging to reconstruct morphology and lattice displacement in model Cu3Au nanocrystals (~10 nm spatial resolution) that have been heat-treated at temperatures below, within, and above the order-disorder transition temperature range. The magnitudes and distributions of the scattering amplitudes (proportional to electron density) and lattice strains within these crystals are then analyzed to correlate them to the expected amount of short-range ordering present. |
| Proceedings Inclusion? |
Undecided |