| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
A-73: Simulation of Part-scale Grain Structure Development During Additive Manufacturing Solidification |
| Author(s) |
Matthew Rolchigo, Jim Belak, Benjamin Stump, Alex Plotkowski, Robert Carson, Neil Carlson, Matt Bement |
| On-Site Speaker (Planned) |
Matthew Rolchigo |
| Abstract Scope |
Alloy microstructure development during Additive Manufacturing is complex, occurring on length scales ranging from sub-micron dendrite tips to epitaxial grains spanning many layers of deposited material. A highly parallel cellular automata (CA) code is deployed to investigate grain growth at the scale of parts, using temperature data from high-fidelity fluid and heat transport models of the AM process (OpenFOAM and Truchas) to simulate novel grain structure development with use of complex scan patterns. The microstructure dependence on nucleation parameters, alloy composition, initial conditions, and process parameters will be discussed and compared to experiment, emphasizing texture and the columnar-to-equiaxed transition. The model’s use as a component of the exascale ExaAM project, linking large-scale simulation of process-microstructure-property relationships, is discussed as well. *Work performed under auspices of the U.S. DOE by LLNL under contract DE-AC52-07NA27344, and supported by ECP (17-SC-20-SC), a collaborative effort of U.S. DOE Office of Science and NNSA. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |