About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Bridging Scales: Deformation and Damage Mechanisms in Microstructurally and Compositionally Complex Metallic Alloys
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| Presentation Title |
Tailoring the Mechanical Behavior of FeCoNiCuB High-Entropy Alloys Through Microalloying |
| Author(s) |
Ali Fethi Erdem, Taner Göktuğ Tekin, Yiğit Can Çavdarlı, Sertaç Altınok, Eren Yunus Kalay |
| On-Site Speaker (Planned) |
Ali Fethi Erdem |
| Abstract Scope |
The brittleness of high-entropy alloys (HEAs) with complex chemistries remains as an obstacle to their mechanical reliability. In this study, FeCoNi1.5CuB-based HEAs were synthesized with minor additions of yttrium (0.1–0.2 at.%), silicon (0.1 at.%), and chromium to explore their effect on compressive mechanical behavior. The alloys demonstrated a wide range of yield strengths (110–1400 MPa) and compressive strain-to-failure values (1–14%). Several compositions showed premature fracture or limited plasticity. Yttrium addition did not show a predictable change in strength and often corresponded to early failure. In contrast, Si and Cr co-alloying moderately improved strain but were not enough to reduce the intrinsic brittleness of the base system. The results indicated that Y promotes embrittlement, while Si and Cr can improve strength with limited ductility. Accordingly, a detailed analysis integrating machine learning approaches will be presented to explore the factors influencing the strength and embrittlement through microstructure-property predictions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, High-Entropy Alloys, Machine Learning |