Abstract
In order to identify the neutron irradiation effects on fracture resistance of advanced SiC/SiC composites, unloading-reloading single edge notched bend tests were conducted and an analytical model based on non-linear fracture mechanics was applied. As a result of the analysis, energy release rate contributed by macro-crack initiation of 3.1 kJ/m2 for both unirradiated and irradiated advanced SiC/SiC composites (Hi-Nicalon Type-S (0°/90° plain woven)/multilayer/chemically vapor infiltration) is estimated. This result indicates no significant degradation in fracture resistance after neutron irradiation to 5.9 × 1025n/m 2 at 800 °C.
| Original language | English |
|---|---|
| Pages (from-to) | 411-415 |
| Number of pages | 5 |
| Journal | Journal of Nuclear Materials |
| Volume | 417 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Oct 1 2011 |
Funding
The authors would like to thank Ms. A.M. Williams, Mr. L.T. Gibson, Ms. P.S. Tedder, Ms. A.D. Harrison, Ms. S.G. Beck and Mr. L.E. Reid for post-irradiation experiments. Irradiation was carried out in the Department of Energy High Flux Isotope Reactor User Facility. This research was sponsored by the Office of Fusion Energy Sciences, US Department of Energy under contract DE-AC05-00OR22725 with UT-Battelle, LLC. This study was also a part of ‘JUPITER-II (currently TITAN)’ US Department of Energy/Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) collaboration for fusion material system research.
| Funders | Funder number |
|---|---|
| US Department of Energy/Japanese Ministry of Education, Culture, Sports, Science and Technology | |
| U.S. Department of Energy | DE-AC05-00OR22725 |
| Fusion Energy Sciences | |
| Ministry of Education, Culture, Sports, Science and Technology |