|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||A-36: Progress toward Predicting Rapidly Solidified Microstructures of Metallic Alloys
||John Roehling, Aurelien Perron, Jean-Luc Fattebert, Gabe M. Guss, Manyalibo J. Matthews, Patrice E. A. Turchi, Joseph T. McKeown
|On-Site Speaker (Planned)
Complete prediction of rapidly solidified microstructures requires full knowledge of the thermal, solutal, and free-energy fields of the solidifying material. Phase-field simulations have the ability to properly track these fields and therefore predict solidification microstructures. However, to achieve suitably predictive models, the results must be informed by experimental data. This work highlights recent progress toward validating predictive (phase-field) modeling capabilities with in situ and ex situ experimental observations of rapidly solidified alloys, using the dynamic transmission electron microscope (DTEM) at LLNL. The in situ DTEM measurements allow two-dimensional experiments to be compared directly with phase-field models in order to better understand the non-equilibrium structures produced during rapid solidification. This work was performed under the auspices of the U.S. Department of Energy (DOE) by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Work was funded by the Laboratory Directed Research and Development Program at LLNL under project tracking code 15-ERD-006.
||Planned: Supplemental Proceedings volume