| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Temperature Sensitive Isotropic Sintering Model for 316L Binder Jetting Parts |
| Author(s) |
Alexander Abanobi, Étienne Martin |
| On-Site Speaker (Planned) |
Étienne Martin |
| Abstract Scope |
Sintering anisotropy is observed during Metal Binder Jetting Additive Manufacturing (MBJAM). This means a conventional or isotropic sintering model cannot be used to accurately model the behavior observed experimentally. Material properties such as viscosity, activation energy, and sintering stress that have a known influence on the anisotropic behaviour were studied experimentally and numerically. Based on our observations, a new continuum model is proposed for MBJAM. Using the dilatometer strains, an inverse problem was solved by scaling the directional sintering stresses with numerically calibrated temperature dependent coefficients. The result of this process was able to capture the sintering anisotropy with an R-squared value of >95% for each of the three orthogonal directions. Finally, other methods for capturing the sintering anisotropy such as experimentally calibrating the viscosity and the bulk and shear moduli were compared. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Mechanical Properties |