| Abstract Scope |
Multiple additive manufacturing processes (e.g., binder jetting, fused deposition modeling) can 3D print green parts of complex geometries that must be densified through sintering. The sintering process is a critical step that determines the final microstructure (i.e., porosity, micro-cracking, and grain texture) and properties of the printed parts. In this work, we present a Phase-Field model to simulate the powder densification and grain growth during sintering. The model uses thermodynamic descriptions from the CALPHAD database and the dimensional coefficients to calculate the energy density function for the material(s) to be simulated. The model is validated against experimental results and then used to investigate the effect of green density on the part shrinkage and pore/cracking formation during sintering. |