| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
C-20: In-situ Synchrotron X-ray Study of Shear Induced Phase Transformation of Copper-bismuth Mixture Using a High-speed Rotational Diamond Anvil Cell (HS-RDAC) |
| Author(s) |
Tingkun Liu, Changyong Park, Mayur Pole, Mengkong Tong, Arun Devaraj |
| On-Site Speaker (Planned) |
Tingkun Liu |
| Abstract Scope |
Extreme shear deformation phenomena are commonly found in the natural world and its process is intentionally employed for engineering purposes to achieve unique microstructures in materials. But the dynamic microstructural evolution mechanisms have been inferred predominantly through ex situ characterizations and computational predictions without in situ experimental validations. Here, we enable in-situ X-Ray diffraction study of dynamic microstructural evolution during shear deformation by implementing a high-speed rotational diamond anvil cell (HS-RDAC) at a synchrotron x-ray beamline. We demonstrate the performance of HS-RDAC for analyzing bismuth phase transformation under extreme shear conditions. Copper was used together as pressure marker in a mixed powder form. Using HS-RDAC and ex-situ multimodal characterizations, we observed shear induced modification of the phase transformation mechanisms of Bi. This in-situ result provides a new insight into the highly dynamic microstructural transformation pathways. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Characterization, Other |