About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XIV
|
| Presentation Title |
Design and Development of the Layered Ni-Mn-Ga Ferromagnetic Shape Memory Alloy-Based Composites for Energy Conversion |
| Author(s) |
Wan-Ting Chiu, Dongkeun Han, Masaki Tahara, Volodymyr Chernenko, Hideki Hosoda |
| On-Site Speaker (Planned) |
Wan-Ting Chiu |
| Abstract Scope |
This study demonstrates a simple and effective method to enhance the magnetostrain performance of Ni-Mn-Ga-based ferromagnetic shape memory alloy (FSMA) laminate composites by replacing nonmagnetic Cu foils with soft magnetic, high-permeability Fe foils. This change led to a significant reduction in the threshold magnetic field required for martensitic variant reorientation (MVR) and a sudden shift in the magnetostrain versus magnetic field behavior. The improvements are attributed to additional tensile stress generated by magnetically induced repulsive forces between the fully magnetized Fe foils, which act on the Ni-Mn-Ga particle layer. This internal stress assists the reorientation process and enhances the magnetic-field-induced strain (MFIS) at lower fields. The results provide a new design strategy for FSMA-based composites, showing that soft magnetic framing materials can play an active role in tuning internal stress and improving performance. This approach can be extended to the development of efficient and responsive FSMA actuators and energy systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Copper / Nickel / Cobalt, Magnetic Materials |