Abstract
Unidirectional silicon carbide (SiC)-fiber-reinforced SiC matrix (SiC/SiC) composites fabricated by a nano-infiltration and transient eutectic-phase (NITE) process were irradiated with neutrons at 600 °C to 0.52 dpa, at 830 °C to 5.9 dpa, and at 1270 °C to 5.8 dpa. The in-plane and trans-thickness tensile and the inter-laminar shear properties were evaluated at ambient temperature. The mechanical characteristics, including the quasi-ductile behavior, the proportional limit stress, and the ultimate tensile strength, were retained subsequent to irradiation. Analysis of the stress-strain hysteresis loop indicated the increased fiber/matrix interface friction and the decreased residual stresses. The inter-laminar shear strength exhibited a significant decrease following irradiation.
| Original language | English |
|---|---|
| Pages (from-to) | 478-486 |
| Number of pages | 9 |
| Journal | Journal of Nuclear Materials |
| Volume | 448 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - May 2014 |
Funding
This work was supported by Office of Fusion Energy Sciences under contract DE-C05-00OR22725 with UT-Battelle, LLC, and US-Japan TITAN Collaboration on Fusion Blanket Technology and Materials. Research was supported in part by High Flux Isotope Reactor, which is sponsored by the Office of Basic Energy Sciences, U.S. Department of Energy, and International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University. The first author was partly supported by a Grant-in-Aid for JSPS Fellows 24-3915.