| About this Abstract |
| Meeting |
Additive Manufacturing Benchmarks 2022 (AM-Bench 2022)
|
| Symposium
|
Additive Manufacturing Benchmarks 2022 (AM-Bench 2022)
|
| Presentation Title |
Simulating Spot Melts in 3D with Dendrite-scale Resolution
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| Author(s) |
Stephen J. DeWitt, Christopher Newman, Stephen Nichols, Jean-Luc Fattebert, Balasubramaniam Radhakrishnan, James Belak, John Turner |
| On-Site Speaker (Planned) |
Stephen J. DeWitt |
| Abstract Scope |
High fidelity additive manufacturing simulations at the melt-pool scale have been demonstrated in recent years as part of the AM-Bench Challenge and elsewhere. When these simulations include microstructure evolution, it is usually limited to grain envelopes (e.g. using cellular automata methods) due to computational constraints. Here we show that advancements in hardware and software make higher resolution simulations possible, using the Tusas phase-field code that can efficiently use the entire 200 petaFLOP/s Summit supercomputer. We present a 3D phase-field simulation of the solidification of an entire spot melt in a single crystal binary alloy that resolves dendritic/cellular features. This approach allows us to investigate the non-steady-state evolution of the sub-grain solidification morphology and the associated solute microsegregation as the solidification front traverses rapidly changing thermal conditions across the melt pool. We also discuss planned extensions to polycrystalline systems. |
| Proceedings Inclusion? |
Undecided |