| About this Abstract |
| Meeting |
TMS Specialty Congress 2024
|
| Symposium
|
Accelerating Discovery for Mechanical Behavior of Materials 2024
|
| Presentation Title |
A Crystal Plasticity Study on the Effects of Strength Anisotropy on the Deformation Response of BCC Polycrystal |
| Author(s) |
Ezra T. Mengiste, Dominic Piedmont, Mark C. Messner, Meimei Li, James Stubbins, Jun-Sang Park, Xuan Zhang, Matthew Kasemer |
| On-Site Speaker (Planned) |
Ezra T. Mengiste |
| Abstract Scope |
Metallic alloys subjected to irradiated environments have been observed to possess increased yield strength and reduced ductility compared to unirradiated samples. It is important to understand the micromechanical source of these effects for the reliability of components utilized in irradiated environments. Assuming that a major contributor to this behavior is slip system strength anisotropy, we perform a study using a full-field crystal plasticity model to simulate the deformation response of idealized polycrystalline samples with strength anisotropy parameterized. We execute a suite of simulations and explore the effects of increasingly severe strength anisotropy on the reorientation trajectories and fragmentation of grains within a BCC
polycrystal. We will scrutinize individual grains and their mechanical states as a function of their local grain neighborhood, as well as the effects of the activation of secondary slip families, and results will be analyzed through the lens of insights from high energy X-ray diffraction experiments. |
| Proceedings Inclusion? |
Definite: Other |