About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Investigation of Scan Rotation Effects in Additive Manufacturing Using Cellular Automata-based Microstructure Modeling |
Author(s) |
Matthew Rolchigo, John Coleman, Gerry Knapp, Jamie Stump |
On-Site Speaker (Planned) |
Matthew Rolchigo |
Abstract Scope |
The strength and mechanical anisotropy of additively manufactured parts are strongly linked to microstructural features such as grain size and texture. One strategy previously used to successfully control microstructure through careful selection of processing conditions is the application of layer-wise rotations to standard raster scan patterns. This study demonstrates the ability of ExaCA, a cellular automata-based model of the liquid-solid phase transformation, to rapidly generate explicit microstructure predictions in stainless steel builds for scan patterns utilizing layer-wise rotations. Model accuracy will be assessed using pole figure and EBSD mapping data from test builds. The use of simulations to understand process-microstructure relationships associated with scan rotation effects will enable the code to assist in future scan pattern design, addressing the challenges posed by the many possible rotation permutations and expensive build and characterization processes. Work performed under the auspices of the U.S. Department of Energy under contract DE-AC05-00OR22725 for ORNL. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Computational Materials Science & Engineering, |