About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Advances in Multi-Principal Element Alloys V: Mechanical Behavior
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| Presentation Title |
What you see is what you get: Leveraging short-ranged order in chemically complex alloys through improved characterization methods |
| Author(s) |
Po-Cheng Kung, Rui Feng, Peter Liaw, Jian-Min Zuo, Jessica A. Krogstad |
| On-Site Speaker (Planned) |
Jessica A. Krogstad |
| Abstract Scope |
It has long been postulated that local chemical ordering (LCO) in compositionally complex alloys plays a significant role in their mechanical behavior, which has prompted many efforts to tailor and characterize LCO in these alloys. Significant advancements in performance have been impeded by the limitations of conventional characterization techniques. Leveraging our novel procedure, that combines both diffuse-scattering fluctuation and correlation (FluCor) analysis, we can determine both the LCO structure and spatial distribution from diffuse scattering analysis in complex alloys. We apply this procedure to a solution-treated and annealed (CrCoNi)93Al4Ti2Nb medium entropy alloy. We can distinguish between chemical ordering and other localized defects, and can also track the evolution of LCO features. Our ability to understand the thermal evolution of localized domains provides a route to directly correlate processing steps with changes in mechanical behavior, marking a practical route towards systematically tailored complex alloy properties based on LCO. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, Phase Transformations |