About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Magnetic Materials
|
Presentation Title |
D-17: Microstructural Processing and Phase Stabilization Analysis of Off-stoichiometric
Fe-Mn-Ga Shape Memory Alloy |
Author(s) |
Nana A. Adoo, Nickolaus M. Bruno |
On-Site Speaker (Planned) |
Nickolaus M. Bruno |
Abstract Scope |
Fe-based magnetic shape memory alloys (MSMAs) have been of great interest to the scientific community as they have been shown to exhibit a metamagnetic phase transition, namely a concurrent reversible martensitic transition and change in magnetic ordering. The multiferroic transitions in these alloys have potential application as energy harvesters, solid-state magnetic coolants, sensors, and actuators. Unlike Ni-based MSMAs, Fe-based MSMAs have been reported to exhibit better ductility, however, the effect of processing on phase stability and the metamagnetic behaviors have rarely been studied. This work shows that non-transforming phases can form in FeMnGa MSMAs with slow cooling after homogenization treatments and that the large transformation hysteresis observed in these alloys is heavily influenced by the microstructure and alloy composition. The structure-property relationships in FeMnGa MSMA are investigated over a range of compositions (e/a ratio) and we present possible processing methods and compositions useful for engineering stable and transformable Fe-based MSMAs. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, Other, Other |