About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
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Computational Materials for Qualification and Certification
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Presentation Title |
Computational Framework for Spatially-Dependent Melt Pool and Microstructure Simulations of Additively Manufactured Material |
Author(s) |
Gerry L. Knapp, John Coleman, Matthew Rolchigo, Selda Nayir, Sam Reeve, Alex Plotkowski |
On-Site Speaker (Planned) |
Gerry L. Knapp |
Abstract Scope |
To ensure similar solidification and thermal conditions across a part during AM processing requires precise control over the process-structure-property relationships of the material. Here, we demonstrate a framework using as-built conditions to simulate the microstructure in different regions of powder bed fusion stainless steel 316-H parts. Process data were extracted from the Oak Ridge National Laboratory Manufacturing Demonstration Facility (MDF) Digital Factory database and used to instantiate melt pool-scale heat transfer and solidification simulations on an Oak Ridge Leadership Computing Facility system. The resulting simulated melt pools and microstructure were compared directly to characterization of the corresponding regions in the manufactured part. Finally, we discuss challenges for extending such an approach to part qualification. This research was sponsored by both the US Department of Energy Advanced Materials and Manufacturing Technologies Office (Office of Energy Efficiency and Renewable Energy) and Advanced Materials and Manufacturing Technologies (Office of Nuclear Energy) programs. |