About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Mechanical Performance of Al-Doped Boron Carbide Ceramics and Neutron-Irradiated HT9 Steel for High-Temperature Applications |
| Author(s) |
Md Ershadul Alam, Arezoo Zare, Alireza Bokaei, Qi R Yang, Stuart A Maloy |
| On-Site Speaker (Planned) |
Md Ershadul Alam |
| Abstract Scope |
This study examines the mechanical properties of two advanced materials for high-temperature applications. The flexural strength of a newly developed aluminum-doped boron carbide (Al-BC) ceramic was evaluated under both as-processed and annealed (1200ºC/24h) conditions at room temperature (RT) and 1200°C (in Ar) using a three-point bending test fixture of 40 mm span at a 0.5 mm/min displacement rate following ASTM C1211. Results showed that flexural strength at RT was similar for both conditions (320–340 MPa) but decreased significantly at 1200°C by 45% for as-processed and 60% for annealed samples, with highly scattered values. Microstructural and fractographic analyses were performed to investigate the reasons for this reduction. Additionally, fracture toughness tests at RT were conducted on neutron-irradiated HT9 steel samples exposed to different irradiation conditions (92 dpa/360-370ºC and 175 dpa/400-420ºC). Using fatigue pre-cracked specimens and ASTM E1820 standards, the static fracture data were analyzed for both sets of samples. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Nuclear Materials, Mechanical Properties |