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 |
Phase Field Modeling of Irradiation-Induced Amorphous-to-Crystalline (A-C) Transformations in Structural Ceramics |
Author(s) |
Md Ali Muntaha, Janelle Wharry, Claire Xiong, Nathaniel Keninger, Tristan Olsen, Cyrus Koroni, Sarah Pooley |
On-Site Speaker (Planned) |
Md Ali Muntaha |
Abstract Scope |
Understanding amorphous-to-crystalline (A-to-C) phase transformations in structural ceramics is vital for enhancing material resilience. This study utilizes the phase field method (PFM) to model irradiation-induced A-to-C transformations in aluminum oxide (Al2O3), zirconium oxide (ZrO2), and silicon nitride (Si3N4). PFM simulations capture the microstructural evolution and nucleation dynamics under varying irradiation conditions. Key factors such as energy deposition, defect formation, and thermal spikes are incorporated. The results reveal that irradiation can induce metastable crystalline phases at lower temperatures than thermal annealing. Advanced techniques like transmission electron microscopy (TEM) and electron pair distribution function (ePDF) validate the findings. This work highlights the potential of irradiation to enhance mechanical properties, offering insights for designing superior structural ceramics for defense and aerospace applications. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Nuclear Materials, Phase Transformations |