| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XIII
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| Presentation Title |
Investigation of Martensite Variant Reorientation Behaviors of the Ni-Mn-Ga Particles Composite Materials |
| Author(s) |
Wan-Ting Chiu, Pimpet Sratong-On, DongKeun Han, Masaki Tahara, Volodymyr Chernenko, Hideki Hosoda |
| On-Site Speaker (Planned) |
Wan-Ting Chiu |
| Abstract Scope |
Green energies are important topic among the critical sustainability issues. Among many different renewable energies, magnetic cooling materials have attracted much attention due to their relatively low environmental impact. Among the magnetocaloric materials, magnetic shape memory alloys (MSMAs) are considered promising. Heusler type Ni-Mn-Ga alloys, as prototypes of MSMAs, are the most studied materials. Different from the conventional thermal-driven shape memory alloys (SMAs), the ferromagnetic SMA Ni-Mn-Ga (FSMAs) exhibit giant strain due to martensitic variants reorientation when an external magnetic field is applied. In addition, they show a high magnetocaloric effect, i.e., high magnetic field-induced entropy change as a result of the magnetic field-induced martensitic transformation. In this study, the martensite variant reorientation behaviors of the Ni-Mn-Ga particles ensembles (embedded as fillers in composites) have been investigated under different external fields (i.e., stress and/or magnetic field). In addition, the magneto-mechanical coupling effect in the Ni-Mn-Ga particles systems was also evaluated in this work. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Energy Conversion and Storage, Magnetic Materials |