About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
Phase-field Model of Friction Stir Welding Recrystallization and Grain Growth |
Author(s) |
Floyd W. Hilty, Jacob Bair |
On-Site Speaker (Planned) |
Floyd W. Hilty |
Abstract Scope |
The phase-field method was used to model grain structure evolution in 316L stainless steel during friction stir welding. Recrystallization is modeled using an explicit nucleation approach where the probability of nucleation is primarily determined from the dislocation density, as calculated with the Kocks-Mecking model. Realistic strain rates and temperature profiles were obtained from smooth particle hydrodynamics and in-situ measurements. Samples of 316L stainless steel were characterized with SEM and EBSD before and after the friction stir welding process. These micrographs provide the initial grain structure and orientation to the model and validate the results through direct structural comparison and average grain size. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Phase Transformations, Iron and Steel |