| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
In-Situ Fatigue Cracking at Room and Elevated Temperatures of a Dual-Phase High Entropy Alloy |
| Author(s) |
Yuanbo Tang, Qinan Han |
| On-Site Speaker (Planned) |
Yuanbo Tang |
| Abstract Scope |
Eutectic high entropy alloy is a promising candidate for elevated temperatures. This research aims to study the fatigue mechanism of AlCoCrFeNi2.1 by observing fatigue crack growth using an in-situ scanning electron microscope (SEM) at room temperature and 600 °C. The as-cast AlCoCrFeNi2.1 EHEA was examined using electron backscattered diffraction (EBSD) before and after fatigue crack growth. Numerous damage mechanisms were captured in real-time, with evidence showing slip traces, short crack initiation and propagation. The results were then rationalised using a crystal plasticity finite element (CPFE) simulation where dual-phase real grain reconstruction was imported from EBSD data. The corroborative approach combining in-situ SEM, EBSD and CPFE was able to provide new insights into competitive transgranular and intergranular crack growth with strain partitioning within each phase. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, High-Entropy Alloys, High-Temperature Materials |