| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advancing Current and State-of-the-Art Application of Ni- and Co-based Superalloys
|
| Presentation Title |
Phase-field-informed Modeling of γ’ Rafting in 3D during High-temperature Creep in Ni-based Single Crystal Superalloys |
| Author(s) |
Jean-Briac le Graverend, Rajendran Harikrishnan |
| On-Site Speaker (Planned) |
Jean-Briac le Graverend |
| Abstract Scope |
Rafting during high-temperature/low stress creep is an important microstructural evolution in Ni-based single crystal superalloys. In fact, the evolution of the γ channel widths directly affects the mechanical behavior and damage. Even if many constitutive models considered the effect of rafting on the mechanical behavior through the use of a scalar, a few have been done to predict rafting in 3D. It is, however, a requirement for multiaxial loading and not-<001>-oriented specimens. It is why a vectorial formulation is proposed and implemented in a crystal plasticity framework. Since continuous 3D characterizations of rafting are not yet available, the model is validated with 3D phase field simulations on different crystallographic orientations and temperature/stress conditions. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |