About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Material Responses Investigated Through Novel In-Situ Experiments and Modeling
|
| Presentation Title |
Slip Band Evolution and Localized Deformation in Polycrystals: A Coupled XFEM and CPFEM Study |
| Author(s) |
Chamara Herath, Ajit Achuthan |
| On-Site Speaker (Planned) |
Chamara Herath |
| Abstract Scope |
Accurate prediction of slip band formation is essential for understanding localized deformation and its influence on the mechanical behavior of crystalline materials. Slip bands often govern the onset of plasticity and damage, particularly in microstructure-sensitive regions where stress and strain are localized. This study presents a computational framework that couples the Crystal Plasticity Finite Element Method (CPFEM) with the Extended Finite Element Method (XFEM) to simulate the initiation and evolution of slip bands. The approach captures displacement discontinuities without requiring mesh refinement, enabling efficient and detailed modeling of microstructure-driven slip localization. The model successfully predicts slip band paths and their interaction with microstructural features, offering insights into anisotropic and heterogeneous deformation behavior. The framework is calibrated and validated for 316L stainless steel using in-situ and ex-situ micro-tensile tests. This work advances predictive modeling capabilities for localized deformation and contributes to the design of materials with enhanced resistance to slip-band-induced failure. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Mechanical Properties |