| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
Binder Jet Printed and Sintered Porous Ni-Mn-Ga Magnetic Shape-Memory Alloys |
| Author(s) |
Pierangeli Rodriguez de Vecchis, Amir Mostafaei, Markus Chmielus |
| On-Site Speaker (Planned) |
Markus Chmielus |
| Abstract Scope |
Polycrystalline magnetic shape-memory alloys (MSMAs) usually show little functionality, since twin boundary motion is hindered by grain boundaries. Decreasing the number of constraints that grain boundaries present is a strategy to increase magnetic field induced strain. This is done by creating polycrystalline MSMAs with large grains spanning one entire dimension of the samples or by introducing porosity that disconnects grains from each other. Using binder jet 3D printing (BJP) and subsequent partial sintering enables the creation of complex geometries from pre-alloyed powders, while tailoring porosity and grain size. Resulting large-grained microstructures with interconnected porosity can help increase functionality of polycrystalline MSMAs by decreasing internal constraints to twin boundary motion. In this talk, we will discuss different strategies to tailor the final part microstructure which in turn should improve functionality of polycrystalline Ni-Mn-Ga MSMAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Magnetic Materials |