About this Abstract |
Meeting |
2026 TMS Annual Meeting & Exhibition
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Symposium
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Advances in Multi-Principal Element Alloys V: Mechanical Behavior
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Presentation Title |
Specifically Designed Multi-Principal Alloy Exhibiting Shape-Memory Behavior |
Author(s) |
Lucia Del-Río, Raul Gómez, Takanobu Hiroto, Mikel Pérez-Cerrato, Leire García-Sesma, Nerea Burgos, Maria L. Nó, Koichi Tsuchiya, Jose M. San Juan |
On-Site Speaker (Planned) |
Jose M. San Juan |
Abstract Scope |
A new design is applied to merge two concepts: High-Entropy or Multi-Principal Alloys, together with Fe-Mn-Si-based Shape Memory Alloys. These two families, exhibiting both a FCC high-temperature phase, share the possibility to transform to ε martensite, allowing the design of a new High-Entropy Shape Memory Alloy (HESMA). Thus, a new Fe-Mn-Co-Cr-Si-Ni alloy, is designed and produced by powder metallurgy. Two different methods were used to obtain the final samples: HIP plus Hot-rolling, and AM through Laser Powder Bed Fusion. In addition, the martensitic transformation was studied by internal friction and dynamic modulus measurements between 120 K and 700 K, following the evolution of the MT on cycling. In parallel, the evolution of the microstructure during the MT has been studied through two different techniques: X-ray diffraction as a function of temperature, and electron backscatter diffraction (EBSD) by in-situ measurements at the scanning electron microscope with a cooling-heating stage. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Additive Manufacturing, Phase Transformations |