| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Elucidating Microstructural Evolution Under Extreme Environments
|
| Presentation Title |
The Role of Dilute Phosphorus, Copper, and Excess Vacancies on the Formation of Solute Clusters in Low-Alloy Steels |
| Author(s) |
Jia-Hong Ke, Mukesh Bachhav, Anshul Kamboj |
| 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 and embrittlement. However, chemical coupling among various solute elements and excess vacancies remains poorly understood. This research utilizes atomistic modeling to study the stability and morphology of nano-size coherent solute clusters. The simulation results show an intriguing role of excess vacancies in stabilizing the formation of solute clusters. The results of Cu-bearing steels demonstrate the stabilizing effect of Cu on the formation of Mn-Ni-Si clusters with a co-clustering and appendage morphology. Phosphorus was found to be preferentially dissolved in the Mn-Ni-Si clusters assisted by the coupling with vacancies. The correlation of alloying composition on the equilibrium phase fraction and composition of solute clusters will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Nuclear Materials, Iron and Steel |