| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
|
| Presentation Title |
Physics-based Model Prediction of Microstructure and Creep Properties for As-built Additively Manufactured Stainless Steel 316-H |
| Author(s) |
Gerry L. Knapp, Matt Rolchigo, Sagar Bhatt, John Coleman, Mark Messner, Alex Plotkowski |
| On-Site Speaker (Planned) |
Gerry L. Knapp |
| Abstract Scope |
Additively manufactured (AM) parts are built from material that has undergone dynamic and complex thermal conditions during processing. As-built microstructures can differ from conventional processing, which necessitates qualification of AM materials for nuclear applications. However, qualification can be time-consuming for long-term metrics such as creep. Here, we demonstrate a physics-based modeling workflow that simulates the creep performance for regions in an AM stainless steel 316-H part. Using the digital factory infrastructure at the Oak Ridge National Laboratory Manufacturing Demonstration Facility, heat transfer and grain-scale solidification microstructure simulations were run based on scan paths from in situ process data. The resulting explicit representation of the microstructure was passed to a crystal plasticity-based creep model. We will discuss the insights into process-structure-property relationships for creep performance and the applicability of the workflow to accelerated material qualification. This research was sponsored by the U.S. Department of Energy AMMTO and NE offices. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Iron and Steel |