About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Investigation of the Temperature-Dependent Failure Processes in PVD Cr-Coated ZIRLO Nuclear Fuel Cladding Using In Situ X-Ray Micro-Tomography Imaging |
| Author(s) |
Guanjie Yuan, Martin Ševeček, Dong (Lilly) Liu |
| On-Site Speaker (Planned) |
Dong (Lilly) Liu |
| Abstract Scope |
In this work, an accident tolerant fuel (ATF) cladding system with Cr coating deposited using physical vapour deposition (PVD) method onto commercial Optimized ZIRLOTM was studied. The cladding tubes were machined into C-rings and loaded to failure under compression with real-time synchrotron micro-X-ray computed tomography (XCT) imaging at room temperature (RT), 345°C, 650°C and 950°C in argon (Ar) atmosphere. The mechanical behaviour and failure processes were found strongly temperature-dependent where coating showed brittle fracture at RT and 345°C, ductile fracture at 650°C and a reversion to brittle fracture at 950°C. Nanoindentation measurements and scanning electron microscopy (SEM) imaging were conducted on the materials after high temperature testing. The influences of microstructures and local properties on the coating failure stress/strain and failure processes are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Nuclear Materials, Characterization |