About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Lightweight Alloy Matrix Composites
|
| Presentation Title |
Engineering Lattice-Matrix Interfaces in PrintCast Components to Increase Effective Ductility |
| Author(s) |
Samuel Bell, Sebastien Dryepondt, Holden C. Hyer, Frank Sant, Amanda Heimbrook, Derek Splitter |
| On-Site Speaker (Planned) |
Holden C. Hyer |
| Abstract Scope |
PrintCast technologies integrate additive manufacturing with conventional casting to create metallic composites with tunable thermomechanical and physical properties. This process typically involves printing a lattice from a high-strength, high-stiffness alloy, such as 316L stainless steel, and subsequently infiltrating a secondary material of a lower melting temperature and high thermal conductivity, e.g., A380 Aluminum. As the synergy between printing and casting has evolved, improved bonding between the matrix and lattice materials has been observed. However, improved bonding can also lead to diminished ductility by limiting slip between the material constituents, decreasing performance significantly. Maintaining a cohesive interface is vital for maintaining desired physical properties and component integrity. To achieve the desired balance between cohesion and controlled interface sliding under loading, this study employs interface engineering techniques such as selective heat treatments and release agents during infiltration. The effects on ductility and microstructure are assessed through tensile testing and microstructural characterization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Composites, Process Technology |