About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Manufacturing in Space
|
| Presentation Title |
Laser directed energy deposition additive manufacturing of lunar highland regolith simulant |
| Author(s) |
Sarah J. Wolff, Sizhe Xu, Alan Luo |
| On-Site Speaker (Planned) |
Sarah J. Wolff |
| Abstract Scope |
This study explores the feasibility of using laser directed energy deposition (LDED) additive manufacturing to make structures from lunar highland regolith simulants (LHS-1). The research investigates the fabrication process under varied ambient and inert conditions (oxygen lower than 150 ppm) and a range of laser powers and scanning speeds to optimize process parameters. X-ray diffraction (XRD) and microscopy show the microstructural characteristics and phase evolution of printed samples. Results demonstrate that the choice of substrate significantly impacts adhesion of a printed clad, with alumina-silicate ceramic as the optimal base substrate for printing. Morphological analysis reveals the formation of porous tubular structure under different processing conditions, indicating a strong correlation between laser power, scanning speed, and resultant microstructures. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analyses unveil distinct crystalline phases, including mullite and augite-plagioclase, formed under varying laser powers. |
| Proceedings Inclusion? |
Planned: |