| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
|
| Presentation Title |
Cellular Automata Modeling of Microstructure Resulting from Novel Scan Patterns in Selective Laser Melting |
| Author(s) |
Matthew Rolchigo, Benjamin Stump, Alex Plotkowski, James Belak |
| On-Site Speaker (Planned) |
Matthew Rolchigo |
| Abstract Scope |
Cellular automata (CA) methods have successfully modeled grain characteristics and texture development during traditional linear scan patterns during Additive processing. This work focuses on solidification resulting from both linear and more complex scan patterns, such as multi-spot scans, often used in attempts to control columnar grain growth. Using temperature data calculated using the CFD software OpenFOAM, along with the GPU-accelerated ExaCA code for solidification modeling, we examine texture development and competitive nucleation and growth using a variety of novel scan patterns. The CA model ability to predict experimental microstructural trends, and its potential future use in conjunction with melt pool modeling for engineering scan patterns for desired grain structures will also be discussed. *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. |