| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
| Presentation Title |
Slip bands in Ni-base Superalloys: A Crystal Plasticity Study Informed by Digital Image Correlation |
| Author(s) |
Marat I. Latypov, Jean-Charles Stinville, Jonathan M. Hestroffer, Marie-Agathe Charpagne, Tresa M. Pollock, Irene J. Beyerlein |
| On-Site Speaker (Planned) |
Marat I. Latypov |
| Abstract Scope |
Recent advances in characterization techniques, such as high-resolution digital image correlation (DIC), provided valuable insight into strain localization and formation of slip bands in polycrystalline Ni-base superalloys. Experiments show that intense slip bands often form at coherent twin boundaries at the onset of deformation. These slip bands undergo complex interaction with the polycrystalline microstructure and its non-uniform deformation imposed by macroscopic loading. In this work, we investigate these interactions by crystal plasticity finite element (CPFE) methods. Towards this end, we develop a new CPFE framework for explicit modeling of slip bands directly informed by DIC measurements. Following the presentation of the new framework, we will discuss key findings concerning the micromechanics behind slip transmission and stress concentrations near intense slip bands observed experimentally. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |