| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Computational Thermodynamics and Kinetics
|
| Presentation Title |
Atomistic and Mesoscale Modeling of Nanoscale Sintering: Applications to Additive Manufacturing |
| Author(s) |
Maher Alghalayini, Fadi Abdeljawad |
| On-Site Speaker (Planned) |
Fadi Abdeljawad |
| Abstract Scope |
Recently, several solid-state additive manufacturing (AM) techniques have demonstrated the ability to fabricate complex 3D objects with a nanometric feature size. While such techniques differ in their operating principles, sintering of nanoscale particles is a key aspect of the AM process. Herein, atomistic studies, employing hybrid Monte Carlo-Molecular Dynamics schemes, are used to examine the role of alloying and grain boundaries (GBs) in densification rates. A recently developed mesoscale phase field model is used to examine sintering kinetics of nanoscale powder compacts over diffusive scales. Several statistical and topological metrics are employed to quantify microstructural evolution and pore shrinkage rates. In broad terms, our modeling approach provides future avenues to explore evolving morphologies and interfacial phenomena in AM. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |