| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
| Presentation Title |
F-59: Understanding Role of Sintering Environment on Densification Behavior and Mechanical Properties of Binder Jet Shell Printed Parts |
| Author(s) |
Meisam Khademitab, Kejsi Bishaj, Mohammad Jamalkhani, Mohammadreza Asherloo, Amir Mostafaei |
| On-Site Speaker (Planned) |
Amir Mostafaei |
| Abstract Scope |
The study investigates the influence of binder and sintering atmosphere on the densification behavior and resulting properties of binder jetted parts. A novel approach called "shell printing" is introduced, where the binder is selectively deposited only on the selected areas of the part. This technique allows for the variation of binder content within the binder jetted green part. This approach effectively packed unbound powders inside the bound shell or lattice geometry. Sintering experiments are conducted under different atmospheres (vacuum and pure hydrogen) to compare the densification behavior of both bound and unbound powders. The research demonstrates that the green density of the bulk specimen was lower than the shell-printed parts. Also, detailed characterizations on porosity, grain size, tensile and yield strength, ductility, microhardness, and fractography are conducted to understand how shell structure and sintering atmosphere impact the final microstructure and mechanical properties of binder jetted part. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Characterization |