| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Phase Transformations in Ceramics: Science and Applications
|
| Presentation Title |
Computation of Fracture, Twinning, and Amorphization in Anisotropic Single and Polycrystalline Real-structured B4C Using Phase Field Approaches in the Finite Element Method |
| Author(s) |
Benhour Amirian, Bilen Emek Abali, Mali Moshtaghioun, Jonathan P Ligda, Debjoy D Mallick, James David Hogan |
| On-Site Speaker (Planned) |
Benhour Amirian |
| Abstract Scope |
In this work, a thermodynamically consistent physics-based phase field theory with detailed finite element procedure for various deformation mechanisms including fracture, twinning, and amorphization of realistically-structured boron carbide is formulated and solved at small and large strains with consideration of nonlinear anisotropic elastic behavior and anisotropic phase boundary energy. The capacity of such a model to reproduce specific experimental features of dynamically loaded single and polycrystalline B4C is investigated. The governing equations are solved using a monolithic scheme in a high-level python-based open-source platform, the FEniCS project. To demonstrate the performance of the proposed model, the results with three sets of representative examples are provided. Finally, the model is applied to an authentic microstructure of polycrystalline B4C, where the competition between the deformation mechanisms is accounted for. Altogether, the proposed model opens a number of interesting possibilities for simulating and controlling microstructure pattern development in materials experiencing extreme mechanical loading. |