| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
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Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
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| Presentation Title |
Stretch Formability and Cryogenic Environmental Applicability of Fex(CoNi)90-xCr10 Ferrous Medium-Entropy Alloys |
| Author(s) |
Yeon Taek Choi, Jihye Kwon, Rae Eon Kim, Shin-Yeong Lee, Do Won Lee, Jaehun Kim, Jae Wung Bae, Hyoung Seop Kim |
| On-Site Speaker (Planned) |
Yeon Taek Choi |
| Abstract Scope |
High-entropy alloys (HEAs) are promising as next-generation structural materials due to their excellent mechanical properties, yet their commercialization remains challenging, particularly in developing cost-effective variants with high performance. Ferrous medium-entropy alloys (FeMEAs) with high iron content (Fex(CoNi)(90-x)Cr10, x = 60 and 64 at%) leverage transformation-induced plasticity (TRIP) for applications in cryogenic environments. This study investigates the biaxial stretch formability of FeMEAs at room temperature and their reliability at cryogenic temperatures. Under biaxial tension, the rapid increase in shear bands, which act as nucleation sites for deformation-induced martensite, resulted in an explosive TRIP effect. Consequently, necking and fracture were delayed compared to uniaxial tension, demonstrating superior formability. Additionally, their high deformation capability and strength at cryogenic temperatures ensure safety against extreme forces such as collisions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, Phase Transformations |