| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications IV
|
| Presentation Title |
In-situ Powder-directed Energy Process Control for Additively Manufactured Multi-layer, Functionally Graded Components |
| Author(s) |
Calvin M. Downey, Luis Nunez, Isabella van Rooyen, Indrajit Charit, Michael Maughan, Edward Herderick |
| On-Site Speaker (Planned) |
Calvin M. Downey |
| Abstract Scope |
Harsh environments require advanced materials possessing high-temperature mechanical strength, corrosion resistance, and irradiation resistance. Claddings offer improvements over existing structural materials with protective layers over a bulk component. Additive manufacturing (AM) presents novel blown-powder directed energy deposition (DED) fabrication technologies, including laser-engineered-net-shaping (LENS) and Trumpf hybrid industrial machines. Process control in DED, such as laser heat input and in-situ material composition, make this method unique for overcoming issues such as layer delamination and brittle-phase nucleation. This study investigates DED-fabricated multi-layer bi-metals and compositionally functionally graded materials (FGMs) for 316L stainless steel, Inconel, and Cobalt-based alloys. Multi-layer clad builds are analyzed with x-ray diffraction to allow compositional phase control at the interlayer. Various combinations of FGMs are fabricated to 5–20% grades per layer. Electron microscopy, energy dispersive x-ray spectroscopy, and microhardness tests determine microstructure and preliminary mechanical behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Nuclear Materials |