| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials for Nuclear Applications III
|
| Presentation Title |
Characterization and Post Irradiation Examination of Rapid Laser Chemical Vapor Deposited SiC Fibers |
| Author(s) |
Lorenzo Mazzocco, Petr Cervenka, Arunkumar Seshadri, Kirk Williams, Shay Harrison, Joseph Pegna, Peng Xu, Koroush Shirvan |
| On-Site Speaker (Planned) |
Lorenzo Mazzocco |
| Abstract Scope |
Rapid Laser Chemical Vapor Deposition (R-LCVD) emerged as a novel technique to additively manufacture SiC fibers for use in SiC/SiC composites. R-LCVD’s ability to quickly produce fibers with unique stoichiometry and microstructure needs to be compounded by a systematic evaluation of their mechanical behavior and radiation damage response. R-LCVD fibers have been irradiated in the Massachusetts Institute of Technology Reactor (MITR). Samples include near-stoichiometric and Si-enriched fibers, both untreated and heat treated in various atmospheres at different temperatures. In this work unirradiated control fibers are characterized and compared to the irradiated ones. The properties and performance of the fibers is evaluated with both macroscopic single fiber tensile tests, and microscopic techniques: 4D Scanning Transmission Electron Microscopy (4D STEM), Electron Energy Loss Spectroscopy (EELS), and in-situ micro-tensile tests are used to evaluate the effects of neutron damage on the microstructure of the fibers and correlate them to their macroscopic mechanical performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Composites, Nuclear Materials |