About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
3rd World Congress on Artificial Intelligence in Materials & Manufacturing (AIM 2025)
|
Presentation Title |
Surrogate Modeling of Cluster Dynamics-Predicted Nucleation and Growth of Irradiation Defects Using Time-Series Neural Networks |
Author(s) |
Sanjoy Kumar Mazumder, Andrea M Jokisaari |
On-Site Speaker (Planned) |
Sanjoy Kumar Mazumder |
Abstract Scope |
A time-series based neural network model is presented, to predict the evolution of irradiation defects in structural materials, for application in modern fast reactors. Mean-field cluster dynamics (CD) has been extensively used to investigate the kinetics of nucleation and growth of extended defects, i.e., dislocation loops and voids in materials, under specific irradiation conditions. CD is computationally expensive to predict the population of TEM-observable large defects. The interaction of irradiation defects with microstructural features like grain-boundaries and network dislocations increases the model complexity. Also, the input parameter space expands to define the unirradiated microstructure. We have performed selection of input parameters based on sensitivity analysis of the CD predictions. A long short-term memory network (LSTM) has been trained with the CD-predicted time-series data, for the chosen parameters, to capture the temporal evolution of defects. High-throughput CD simulations were performed to generate the training and validation dataset for the LSTM model. |
Proceedings Inclusion? |
Undecided |