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Meeting 2025 TMS Annual Meeting & Exhibition
Symposium Special Topics in Nuclear Materials: Lessons Learned; Non-Energy Systems; and Coupled Extremes
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

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Advancing Radioisotope Heat Sources: Enhancing RPS for Extreme Environments
Atomistic Simulation of Thermal and Irradiation Creep Mechanisms in BCC-Fe and FCC-Ni using Defect Rate-Based Long-time Dynamics
Best Practices for Irradiation Experiment Design For Nuclear Fuels and Materials Research
Cavity Formation Induced by Swift Heavy Ion Irradiation in AlN/GaN
Comparison of Hardening and Microstructures of Structural Alloys Irradiated with Fast Neutrons and Dual Ions
Developing a High-Performance Cluster Dynamics Code: Challenges and Lessons Learned
Effect of Applied Stress on Radiation-Induced Loop and Raft Formation in a BCC Metal
Effect of Tensile Stress Gradients on the Multi-Length-Scale Microstructure in Thermal and Irradiation Creep of 316L Stainless Steel
Energy Dispersive X-Ray Spectroscopy (EDS) Induced Defects and Implantation Induced Impurities in Uranium Nitride (UN) and SIMFUEL Pellets
Fabrication of Titanium-Containing Tri-Carbide Ultra-High Temperature Ceramics
GIRAFFE – In Situ Material TestsUnder Fusion-Relevant Conditions
In-situ Electron Microscopy Characterization of Deformation Mechanisms of Inconel 718 Irradiated with Simultaneous High Energy Protons and Spallation Neutrons
Influence of Radiation Swelling on Residual Stresses and Measurement of Micromechanical Properties
Materials Research for High-Power Accelerator Beam-Intercepting Devices
Modeling Galvanic Drawdown Separations Technique
Phase Field Modeling of Irradiation-Induced Amorphous-to-Crystalline (A-C) Transformations in Structural Ceramics
Post Irradiation Examination and Administrative Lifetime Limits of Highly Irradiated Components at The Spallation Neutron Source
Small Scale Tests, Big Lessons Learned

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