About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Local Chemical Ordering and Its Impact on Mechanical Behaviors, Radiation Damage, and Corrosion
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| Presentation Title |
Unveiling Short-Range Ordering in Complex Alloys via Atom Probe Tomography: A Perspective on the History, Present and Future |
| Author(s) |
Arun Devaraj, Jenna Pope, Semanti Mukhopadhyay, Christina Doty, Mark Wirth |
| On-Site Speaker (Planned) |
Arun Devaraj |
| Abstract Scope |
Atom probe tomography (APT) offers exceptional capabilities for studying short-range ordering (SRO) in complex alloys, combining sub-nanometer spatial resolution with high chemical sensitivity across elements. APT excels at detecting subtle deviations from random atomic distributions, enabling the identification of SRO domains, clustering tendencies, and early-stage phase transformations in concentrated solid solutions, such as high- and medium-entropy alloys. Traditional methods, like radial distribution functions and cluster-finding algorithms, quantify SRO parameters but require analyst input, introducing variability. Recent advances, such as unsupervised techniques like Compositional Community Detection (CCD), enable direct identification of chemical motifs from APT data. This presentation will explore the strengths, challenges, and future opportunities of SRO analysis methods. Unlocking nanoscale ordering mechanisms is crucial for connecting atomic structure to macroscopic properties in advanced structural materials, driving innovation in alloy design and performance optimization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, High-Entropy Alloys, |