|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||Neutron Re-irradiation and Neutron-ion Irradiation Bootstrapping Approaches to Study Very High Dpa and He Effects in Nuclear Materials
||Takuya Yamamoto, Danny Edwards, Richard Kurtz, G. Robert Odette
|On-Site Speaker (Planned)
The initial development of irradiation microstructures, in lower nucleation dose regimes, often has a dominant effect at higher doses. This led to a bootstrapping approach using ion irradiations to reach higher dpa. The research will explore the concept of “seeding’ the microstructure by neutron irradiation, followed by an increment of ion irradiation dose to higher dpa. To test this hypothesis, the neutron plus ion condition will be compared to a neutron only irradiation to the same dose. Previous tempered martensitic steel samples from in-situ He injection (ISHI) experiments in HFIR will also be re-irradiated in High Flux Isotope Reactor (HFIR) to higher dpa and He. In parallel, FIB lift-outs of the ISHI samples will be dual-ion and single ion irradiated to higher dpa to compare with the HFIR re-irradiation.
||Planned: Supplemental Proceedings volume