| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Effects of LPBF Parameters and Heat Treatment on Physical and Magnetic Properties of Ni-Fe-Mo Permalloy |
| Author(s) |
Nicolas Ayers, Ashton Grace, Yongho Sohn |
| On-Site Speaker (Planned) |
Nicolas Ayers |
| Abstract Scope |
Magnetic shielding component geometry is limited by traditional manufacturing requiring thermomechanical forming. The inherent capability of additive manufacturing to print complex, near net shaped components would allow for more effective magnetic shielding structures. Laser powder bed fusion (LPBF) of pre-alloyed 79Ni-16Fe-5Mo Permalloy powders was studied to determine the effects of processing parameters on relative density, and microstructure. Laser power and scan speed were systematically varied to obtain optimal parameters for achieving a high relative bulk density. Initial density analysis confirmed a relative density greater than 99%. Printed components were comprised of a single austenite phase, as determined by x-ray diffraction. Observations of etched cross-sections reveal elongation of austenite grains in the build direction and cellular segregation of Molybdenum. Subsequent heat treatment was performed to recover soft magnetic properties. Magnetic testing was performed to determine relative permeability and coercivity, as well as quantify the magnetic anisotropy of printed components. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Magnetic Materials, Characterization |