| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Spatially Tailored Materials: Processing-Structure-Properties
|
| Presentation Title |
3D analysis of “meta grain boundaries” in “meta polycrystals” produced by laser powder bed fusion |
| Author(s) |
Samuel Taylor, Matteo Seita |
| On-Site Speaker (Planned) |
Matteo Seita |
| Abstract Scope |
Metal additive technologies such as laser powder bed fusion (LPBF) enable the manufacture of materials with site-specific microstructures. This capability offers new opportunities to design metal alloys with tailored mechanical properties and improved performance. Using stainless steel 316L as a case-study material, we produce samples with site-specific crystallographic textures by manipulating the local solidification conditions across the build. We use this strategy to design “meta polycrystals” that comprise different quasi-single crystal blocks with controlled shape, size, and crystal orientation. In an effort to interpret the mechanical response of these materials, we study the interfaces between the quasi-single crystal blocks—which we refer to as “meta grain boundaries”—using 3D electron backscatter diffraction. Our results shed light into the solidification mechanisms at play during LPBF and the unique mechanical response of our “meta polycrystals”. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Solidification, Mechanical Properties |