About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Accelerated Discovery and Qualification of Nuclear Materials for Energy Applications
|
Presentation Title |
Microscale Measurement of Elastic Constants in Ceramics Using Picosecond Ultrasonics for High Throughput Characterization and Atomic Model Validations |
Author(s) |
Yuzhou Wang, David Hurley, Zilong Hua, Amey Khanolkar, Cody Dennett, Marat Khafizov |
On-Site Speaker (Planned) |
Yuzhou Wang |
Abstract Scope |
Accurate measurement of property and microstructure on microscale enables high throughput characterization that is important for accelerated development and qualification of materials. Laser-based optical spectroscopies have already demonstrated high throughput capability for a range of technological and medical applications. In this work, picosecond ultrasonics was employed to measure the components of the elastic stiffness tensor of two model oxide nuclear fuel systems, thoria and ceria. The technique relies on optical method to generate and detect ultrasonic waves. Three independent elastic constants of cubic materials could be obtained from a single measurement on a single crystal or a grain in polycrystalline materials. The selected grain orientation ensures generation and detection of all ultrasonic wave modes. We further demonstrate that temperature dependent measurement allows investigation of crystal anharmonicity. This technique can be conveniently integrated into an all-optical setup to study irradiation damages for nuclear materials screening. |
Proceedings Inclusion? |
Planned: |