| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Solid-State Phase Transformations and Microstructural Evolution
|
| Presentation Title |
The Dislocation and Composition Microstructure Evolution and Mechanical Properties of Selective Laser Melted Stainless Steels |
| Author(s) |
Markus Sudmanns, Yejun Gu, Jaafar El-Awady |
| On-Site Speaker (Planned) |
Markus Sudmanns |
| Abstract Scope |
One major challenge in Additive Manufacturing (AM) of metallic components is developing an understanding of the relationship between the microstructural evolution due to extreme processing conditions involving large thermo-mechanical stresses and the final mechanical properties of the manufactured part. Various studies attribute the enhanced mechanical properties of Selective Laser Melted (SLM) metallic parts to the formation of cellular dislocation structures, which are usually accompanied by solute segregation to the dislocation cell walls. However, the formation of those cellular structures as well as their effects on the mechanical properties are still poorly understood. Here, we present three-dimensional (3D) discrete dislocation dynamics (DDD) simulations of the dislocation and composition microstructure evolution during SLM manufacturing and their effects on the mechanical properties of 316L stainless steel accounting for solute segregation. These results provide an enhanced understanding of the experimentally observed microstructures and their effect on the mechanical response of SLM manufactured part. |
| Proceedings Inclusion? |
Planned: |