About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Deformation and Transitions at Grain Boundaries VII
|
Presentation Title |
Modeling Growth of Voids in Various Grain Neighborhoods Using Crystal Plasticity Theory |
Author(s) |
Paul G. Christodoulou, Toby Francis, Ricardo A. Lebensohn, Tresa M. Pollock, Irene J. Beyerlein |
On-Site Speaker (Planned) |
Paul G. Christodoulou |
Abstract Scope |
Void growth is dependent on the deformation of the surrounding material and its microstructure, and the deformation is heterogeneous at grain boundaries. The goal of this work is to understand the role of crystallography and grain boundary/grain morphology on void growth in FCC and BCC metals. To this end, voids in model grain neighborhoods were simulated using a dilatation viscoplastic crystal plasticity model implemented in a fast Fourier transform-based solver (DVP-FFT). This talk will discuss the result of void growth in various neighborhoods: within grains aligned at different orientations with respect to loading, at grain boundaries, triple junctions and quadruple junctions. This method is quasi-static in nature, although we seek to study the dynamic properties of this material by simulating triaxialities found as a result of shock loading. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |