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Meeting TMS Specialty Congress 2025
Symposium 8th World Congress on Integrated Computational Materials Engineering (ICME 2025)
Presentation Title Predicting Three-Dimensional Microstructural Defect Evolution Under Neutron Irradiation Considering Formation Energy
Author(s) Ilhyun Cho, Kunok Chang
On-Site Speaker (Planned) Ilhyun Cho
Abstract Scope Neutron irradiation induces atomic-level defects in materials, resulting in observable mesoscale to macroscopic defects.Phase-field methods can successfully simulate the thermodynamic and kinematic properties of materials, and are particularly advantageous for modeling the spatial and temporal evolution of microstructural inhomogeneities under irradiation. Ferritic alloys under neutron irradiation develop a range of defects, including voids and dislocation loops, which influence plasticity. The formation energy of these defects depends on the complex contributions of energies like interfacial and stacking fault energy. This study investigates the stability of voids and prismatic loops in Fe-based alloys by analyzing formation energy as a function of defect size and various environmental variables. We predicted which microstructures are preferred under specific environment and discussed the feasibility of the study using experimental results.
Proceedings Inclusion? Undecided

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