| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
Interface Texture Development of Additively Manufactured Materials |
| Author(s) |
David J. Rowenhorst, Aeriel Murphy-Leonard, Richard Fonda |
| On-Site Speaker (Planned) |
David J. Rowenhorst |
| Abstract Scope |
During the additive manufacturing process, the complex processing conditions of overlapping rapidly solidified melt pools, with preferred solidification directions changing from layer-to-layer leads to a highly complex grain morphology. Using automated mechanical serial-sectioning combined with EBSD, we reveal this complex morphology of the as-built material in 316L stainless steel produced through laser-powder based fusion. The 3D reconstruction shows that grain morphologies are more complex and that the sizes are much larger than expected from 2D cross-sections. Additionally, we show that the interface texture is at a highly non-equilibrium condition, with most of the interfaces within the as-built material occupying relatively high energy configurations. We also show that with subsequent heat treatments, that this interface texture, through processes of recrystallization and grain growth will approach that of the equilibrium state. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |