Speaker
Description
Shell printing represents as an alternative binder jetting strategy in which binder is only applied to the outer shell, while the core region remains binder-free. Experiments on shell printed 17-4PH stainless steels showed reduced sintering anisotropy due to elimination of the process-induced layer-wise porosity in the core. In this work, we developed a multiphysics modeling framework to study the interlayer pore formation in the shell and the particle packing during shell printing as well as the subsequent sintering behavior. The former was realized by coupled computational fluid dynamics- discrete element method simulations to analyze the binder infiltration and the binder-driven particle rearrangement during printing. The resulted powder packing was implemented in the kinetic Monte Carlo Potts simulation to study the sintering behavior in the shell, core, and at the shell-core interfaces. The good agreement between the simulated and experimentally obtained microstructure confirms the validity of the framework.
| Speaker Country | China |
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| Would you like to publish your paper in the special issue of BHM "Berg- und Hüttenmännische Monatshefte" | No |