About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Modeling of the Thermo-Mechanical Response and Texture Evolution of AA6016 and Uranium Using a Strain Gradient Elasto-Plastic Self-Consistent Formulation |
Author(s) |
Zhangxi Feng, Rodney J. McCabe, Ricardo A Lebensohn, Marko Knezevic |
On-Site Speaker (Planned) |
Zhangxi Feng |
Abstract Scope |
The widely used mean field elasto-plastic self-consistent (EPSC) model is first extended to predict intragranular distribution of stress, strain, rotation, and misorientation as a field-fluctuations EPSC (FF-EPSC) model via calculating second-moment terms. Then, FF-EPSC is further extended to predict a distribution of geometrically necessary dislocations (GND), from which backstress is calculated to influence the slip system activation during loading path changes. The final framework is thus named as the strain gradient EPSC (SG-EPSC) model. SG-EPSC model is first validated with modeling of GND evolutions of AA6016 during deformation involving loading path changes and then applied to modeling the deformation behavior of alpha-Uranium during the thermo-mechanical processes of rolling, recrystallization, and sheet forming of a hemispherical part. The modeling of such continuous processing sequence is enabled with the availability of SG-EPSC. The modeling framework, results, and insights are described and discussed in this paper. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Nuclear Materials, Shaping and Forming |