About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing, Directed Energy Deposition of Metals: Processing – Microstructure – Mechanical Property Relationships
|
| Presentation Title |
Directed Energy Deposition of Fe43.5Mn34Al15Ni7 Shape Memory Alloy |
| Author(s) |
Willow N. Knight, Sameehan S. Joshi, Narendra Dahotre, Rob Mayer, Marcus L. Young |
| On-Site Speaker (Planned) |
Willow N. Knight |
| Abstract Scope |
Shape memory alloys (SMAs) have unique properties, like pseudoelasticity, making them very attractive for engineering applications. Additionally, additive manufacturing (AM) can create distinctive microstructures and allows for near-net shaping capabilities. The intersection of SMAs and AM is of increasing research interest due to the unique qualities of each. In the current study, an Fe43.5Mn34Al15Ni7.5 SMA is fabricated using directed energy deposition (DED). Due to limited investigation of this alloy with DED, parameter optimization was performed, and the effect of laser power, scan speed, and mass flow rate on the print quality was evaluated. Compression testing to measure the pseudoelastic properties and microstructural analysis with scanning electron microscopy were performed on bulk samples printed with the optimized print parameters. The effect of homogenization, precipitation, and cyclic heat treatments on the microstructure and mechanical properties was also assessed. The DED technique presented here for Fe43.5Mn34Al15Ni7.5 was also compared with other additive techniques. |