| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Microstructure and Property Variations in Directed Energy Deposited 316L on Super-Austenitic AL6XN |
| Author(s) |
Anna K. Rawlings, Andrew J. Birnbaum, John C. Steuben, John G. Michopoulos |
| On-Site Speaker (Planned) |
Anna K. Rawlings |
| Abstract Scope |
Directed energy deposition (DED) allows for the generation of alloys with tailored compositions, and therefore, properties. In this study, a DED system is utilized to build a thin wall using 316L stainless steel powder on an AL6XN super-austenitic stainless steel baseplate. The extent of local mixing of baseplate and powder materials generated by successive melting and solidification cycles is examined by synchronous energy dispersive spectroscopy (EDS) with electron backscatter diffraction (EBSD). Additionally, microstructural and mechanical property responses along the part height as well as into the build plate resulting from compositional changes and thermal cycling are analyzed by phase indexing, kernel average misorientation mapping, and hardness evaluation via nanoindentation. Lastly, high-resolution characterization of individual layers is performed to investigate microstructural responses due to differing thermal conditions experienced by the center of the deposited bead compared to the bead exterior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, Mechanical Properties |