| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Influence of Printing Parameters on Sintering Shrinkage and its Anisotropy in Binder Jetting 3D Printing of AISI 316L Steel |
| Author(s) |
Alberto Molinari, Giacomo Segata, Marco Zago, Martin Regolini, Matteo Perina, Elisa Torresani |
| On-Site Speaker (Planned) |
Alberto Molinari |
| Abstract Scope |
Sintering shrinkage of Binder Jetted metallic green parts is anisotropic. In particular, shrinkage along the printing direction Z is higher than that in the printing plane, and this anisotropy is attributed to the layered configuration of porosity. Moreover, in several papers and in the previous works of the author, a slight but significant difference between shrinkage along the scanning direction of the printing head and along the powder roller is reported. Since the dimensional change is strongly affected by the microstructure of the green body, and in particular by the distribution and the characteristics of pores, in the present work green parts were manufactured varying some of the printing parameters to obtain microstructures with different pores distribution. Shrinkage was investigated by dilatometry to follow the evolution of dimensional change during the whole sintering cycle. Moreover, furnace sintering experiments in the typical conditions of industrial production were carried out. |
| Proceedings Inclusion? |
Planned: |