| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Printed Electronics and Additive Manufacturing: Advanced Functional Materials, Processing Concepts, and Emerging Applications
|
| Presentation Title |
On the Magnetic Behaviours of Laser Powder Bed Fabricated Ni-Mn-Ga Magnetic Shape Memory Alloys |
| Author(s) |
Anastassia VM Milleret, Ville Laitinen, Nour-eddine Fenineche, Kari Ullakko, Moataz Attallah |
| On-Site Speaker (Planned) |
Anastassia VM Milleret |
| Abstract Scope |
Ni-Mn-Ga-based magnetic shape memory (MSM) alloys exhibit reversible magnetic-field-induced strains (MFIS) of up to 10% in single crystals due to twin boundary motion, making them much faster than thermally activated shape memory materials such as Ni-Ti. Functional Ni-Mn-Ga alloys have previously been limited to single crystals as the grain boundaries largely constrain the twin boundary motion, reducing the MFIS. However, previous research showed that the shape memory effect can be improved through porosity and crystallographic texture. Laser powder bed fusion (L-PBF) was used to fabricate lattices with bamboo-like grain structure wherein the grains stack on top of each other spanning the diameter of the struts. This study investigates the performance, mechanical properties under compressive load, and microstructure of these L-PBF-built Ni-Mn-Ga lattices. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Magnetic Materials, |