| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
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| Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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| Presentation Title |
Cyclic deformation behavior of CoCrFeMnNi multi-principal element alloys with different Cr/Ni |
| Author(s) |
Shubham Sisodia, Maik Rajkowski, Guillaume Laplanche, Ankur Chauhan |
| On-Site Speaker (Planned) |
Ankur Chauhan |
| Abstract Scope |
Multi-principal element alloys (MPEAs) have attracted enormous scientific interest due to their excellent combination of mechanical properties. For MPEAs' potential candidature in engineering applications, understanding their low-cycle fatigue (LCF) behavior is of decisive importance. Recently, several efforts have been put into understanding the LCF response of single-phase and face-centered cubic MPEAs such as equiatomic CoCrFeMnNi and its equiatomic subsets (e.g., CoCrNi, CrFeNi). In this talk, the LCF response of non-equiatomic variants of CoCrFeMnNi MPEA having different Cr/Ni ratios will be presented. The fully reversed strain-controlled fatigue tests have been conducted in the air at room temperature. The materials manifest initial rapid cyclic hardening followed by gradual cyclic softening until failure. Electron-microscopy investigations reveal the reasons for their distinct cyclic response and active deformation mechanisms. Upon comparison with CoCrFeMnNi, the differences and similarities in their deformation mechanisms will be pinpointed, which explains the difference in their lifetimes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Characterization |