About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
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Presentation Title |
Exploring Innovative Nanoscale Structures and Phases in High-Entropy Alloy Nanoparticles Through Femtosecond Laser Ablation |
Author(s) |
Anming Hu, K. Yin, D. Fieser, S. Hugh, J. Zuo, Peter K. Liaw |
On-Site Speaker (Planned) |
Anming Hu |
Abstract Scope |
The structures and properties of high-entropy alloy nanoparticles are not yet fully understood compared to their bulk counterparts due to the dominant influence of surface energy at the nanoscale. In our initial study, we demonstrated that femtosecond laser ablation is a powerful tool for generating nanoparticles with high fidelity to bulk composites. However, the resulting nanoscale structures are highly dependent on the ablation environment. We identified single-crystalline, polycrystalline, and amorphous nanoparticles under different processing conditions. In this talk, we will present systematic characterization and high-resolution TEM observation of ablation conducted in various environments, including liquid nitrogen, nitrogen gas, ethanol, and solid ethanol. The discussion will cover laser parameters, ablation dynamics, cooling effects, and nanoparticle formation. |
Proceedings Inclusion? |
Planned: |