About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Vacancy Engineering in Metals and Alloys
|
| Presentation Title |
Stabilizing solute clusters in low-alloy steels: Effects of excess vacancies and impurity interactions
|
| Author(s) |
Jia-Hong Ke, Anshul Kamboj , Mukesh Bachhav |
| On-Site Speaker (Planned) |
Jia-Hong Ke |
| Abstract Scope |
The formation of solute clusters in irradiated low-alloy steels plays a critical role in radiation hardening. However, the chemical interactions between solute elements and excess vacancies remain incompletely understood. This study employs ab initio Monte Carlo simulations to investigate the stability and morphology of nano-sized coherent solute clusters with excess vacancies, focusing on Mn-Ni-Si and Cu-rich clusters. The results reveal that excess vacancies and ternary solute species are essential for stabilizing and promoting the growth of Mn-Ni-Si clusters. These clusters serve as effective defect sinks, trapping and absorbing mobile vacancies generated under irradiation. Furthermore, the synergistic effects of co-segregated solutes on the interfacial energy of Cu-rich precipitates are examined. This work provides new insights into complex solute-vacancy interactions, advancing the understanding of solute cluster formation and irradiation-induced embrittlement in low-alloy steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Nuclear Materials, Phase Transformations |