| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Designing Complex Microstructures through Additive Manufacturing
|
| Presentation Title |
Printing architectured materials through spatial control of mesostructure in laser powder bed fusion (LPBF) |
| Author(s) |
Christopher R. Hutchinson |
| On-Site Speaker (Planned) |
Christopher R. Hutchinson |
| Abstract Scope |
One advantage of additive manufacturing is the additional degrees of freedom offered for fabricating geometrically complicated shapes. However, this freedom is accompanied by a significant decrease in the degrees of freedom available for microstructure and mesostructured control. Since the micro and mesostructures obtained in these near net-shaped components are largely solidification structures, the normal tools of thermo-mechanical processing for tailoring microstructure are not available in the conventional sense. Instead, new approaches for structure control need to be developed. One approach is to use physically mixed powders of different compositions to exploit a chemical heterogeneity to manipulate the phases formed during solidification. An alternative approach is to use spatially controlled heat treatments using the laser to trigger solid-state phase transformations. Here we present our efforts to create spatially controlled mesostructures in LPBF using solid state phase transformations in steels. We show how this approach can be used to create architectured steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Phase Transformations, Mechanical Properties |