About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Atomistic Simulations Linked to Experiments to Understand Mechanical Behavior: A MPMD Symposium in Honor of Professor Diana Farkas
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Presentation Title |
Evaluation of Stacking Fault Energies and Microstructure Formation in Ni-Cr-Fe Alloys Using Molecular Statics and Dynamics |
Author(s) |
Mohammad Hadi Yazdani, Aoyan Liang, Diana Farkas, Andrea M. Hodge, Paulo S. Branicio |
On-Site Speaker (Planned) |
Mohammad Hadi Yazdani |
Abstract Scope |
The Ni-Cr-Fe alloy system is of significant interest due to its superior mechanical properties and corrosion resistance, making it ideal for advanced engineering applications. In this study, we use molecular statics calculations with various embedded atom models (EAM) to evaluate the stacking fault energies (SFE) and thin film microstructure formation in Ni-Cr-Fe alloys, including both binary and ternary compositions. A comparative assessment of the EAM potentials identified the most accurate force fields based on the predicted stable phases of binary (Ni-Cr, Ni-Fe, Cr-Fe) and ternary (Ni-Cr-Fe) compositions. Molecular dynamics simulations of physical vapor deposition examined the formation of stacking faults, coherent twins, and other microstructural defects. Results indicate a high correlation between stacking fault energy and growth twin thickness. The results offer insights into designing Ni-Cr-Fe alloys with tuned microstructure and optimized performance, impacting high-performance materials development in the aerospace and nuclear industries. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Other |