About this Abstract |
Meeting |
5th International Congress on 3D Materials Science (3DMS 2021)
|
Symposium
|
5th International Congress on 3D Materials Science (3DMS 2021)
|
Presentation Title |
In-situ 3D Imaging of Mechanical Failure in TRISO Particles |
Author(s) |
Stephen T. Kelly, Hrishikesh Bale, Peter Hosemann |
On-Site Speaker (Planned) |
Stephen T. Kelly |
Abstract Scope |
Tri-structural isotropic (TRISO) particles are leading candidates for use as fuel in advanced, high temperature nuclear reactors. They are small (~1 mm diameter) composite spheres containing a nuclear fuel core surrounded by concentric layers of carbon and SiC. Their composite construction allows them to operate at high temperatures with excellent resistance to corrosion, oxidation, and neutron irradiation. The robust containment of the fuel core and fission products depends critically on the integrity of the SiC layer, and the mechanical properties of this layer must be understood for proper fuel particle design and integration into larger scale reactor systems. We present here a 3D in situ investigation into the fracture properties of the SiC layer in a surrogate (non-radioactive core) TRISO particle. We apply a compressive load while simultaneously imaging the 3D microstructure using sub-micrometer x-ray microscopy to visualize crack propagation in the SiC layer. |
Proceedings Inclusion? |
Definite: Other |