| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
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| Symposium
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Special Topics in Nuclear Materials: Lessons Learned; Non-Energy Systems; and Coupled Extremes
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| Presentation Title |
Comparison of Hardening and Microstructures of Structural Alloys Irradiated with Fast Neutrons and Dual Ions |
| Author(s) |
July Reyes-Zacarias, Stephen Taller, Steven J. Zinkle |
| On-Site Speaker (Planned) |
July Reyes-Zacarias |
| Abstract Scope |
Ferritic/martensitic steels T91 and HT9, along with austenitic alloy 800H, were irradiated with fission neutrons from the BOR-60 reactor, and dual ions (9 MeV Fe3+ and 3.42 MeV energy-degraded He2+) at temperatures ranging from 370 to 520 °C and damage levels from 17 to 72 dpa. This study aimed to quantify the similarities and differences between ion and neutron irradiation on microstructures and mechanical properties, in order to develop methods for accelerating the screening and qualification of new structural materials for nuclear energy applications. Nanoindentation testing was conducted to measure the bulk equivalent hardness of dual-ion irradiated samples. For the neutron-irradiated samples, both nanoindentation and Vickers hardness tests were carried out. Transmission Electron Microscopy (TEM) was used to characterize cavities, dislocation loops, and precipitates to evaluate their contributions to the overall strengthening of each alloy as a function of irradiation conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, |