[SY-G6] Phase-field modeling of microstructural evolution of Fe-Cr-Al system
After Fukushima nuclear power plant accident, the Accident Tolerant Fuel Cladding (ATFC) has attracted a great deal of attention. The Fe-Cr-Al system has been studied for a long time as a potential candidate for ATFC due to its excellent high-temperature oxidation resistance. To optimize the microstructure has been performed for a long period of time in order to enhance the mechanical stability of the Fe-Cr-Al alloy in the neutron irradiation environment. The spinodal decomposition generally takes place at nuclear power plants operation temperature, 290 Celsius degree and it is generally have negative effect on their performace. Therefore, we performed the phase-field modeling to predict the phase separation behavior in Fe-Cr-Al system to investigate a role of Cr and Al compositions on decomposition behavior. To obtain large-scale 3D microstructure, we applied CUDA parallelizing computing technique. I will also present comparative analysis results with the microstructure obtained experimentally.