About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Radiation Effects in Metals and Ceramics
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Presentation Title |
H-28: Effect of Ion Beam Irradiation on Microstructure Evolution of a Multi-metallic Layer Composite Material for Accident Tolerant Fuel Cladding Development |
Author(s) |
Taeyong Kim, Jeonghyun Lee , Ji Hyun Kim |
On-Site Speaker (Planned) |
Taeyong Kim |
Abstract Scope |
Multi-Metallic Layer Composite (MMLC) cladding is being developed to replace commercial Zr cladding which is reacted with high temperature steam. Fe-12Cr-2Si alloy, which is an oxidation-resistant material, can be welded on commercial Zr tube. One or two alloy layers composed of Ti or Cr are interposed between Fe-12Cr-2Si layer and Zr layer acting as diffusion barriers to avoid eutectic phases. In this study, Si ion beam (7 MeV and 1.12×1013 ion #/cm2/s) was irradiated to the MMLC plate specimen at 445 ℃ until to obtain 5 dpa. At transmission electron microscopy analysis, as-received specimen has precipitates between Fe-12Cr-2Si and Cr layer. However, the precipitates at Si irradiated MMLC specimen have smaller size and lower number density. This is probably due to back-diffusion caused by the irradiation, and elements composing the precipitate were diffused into the surrounding grain. And Zr alloy shows segregation of Ti and Cr element into grain boundaries. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |