| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Very High Cycle Fatigue of a SiC/SiC ceramic matrix composite at 1000°C |
| Author(s) |
Mathieu Calvat, Jonathan Cormier, Yannick Pannier, Florent Mauget |
| On-Site Speaker (Planned) |
Mathieu Calvat |
| Abstract Scope |
Currently, ceramic matrix composites (CMCs) are utilized in stationary components within the hot sections of cutting-edge aero-engines. Their low density and refractory properties suggest that they will likely substitute superalloys for rotating components. Therefore, CMCs will require additional certification, necessitating an extensive characterization of their fatigue behavior at high temperatures and cycles. In addition to reducing testing duration, the VHCF loading frequencies are comparable to the frequencies of resonance of aircraft engine components. A new VHCF setup has been developed to operate at 20kHz, 1000°C and to handle flat SiC/SiC CMC specimens. High-frequency acquisition was also implemented to enhance understanding of the strain fields experienced by the sample. A total of four CMC specimens were successfully tested up to 1.07×10^10 cycles, demonstrating comparable fatigue life to single crystal nickel-based superalloys. Samples were scanned both pre- and post-testing to locate fracture surfaces, showing correlations with the spatial distribution of porosity. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, High-Temperature Materials, Mechanical Properties |