About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
Crystal-Plasticity Modeling of Monotonic and Cyclic Softening in Inconel 718 Superalloy |
| Author(s) |
Jean-Briac le Graverend |
| On-Site Speaker (Planned) |
Jean-Briac le Graverend |
| Abstract Scope |
A phenomenological model is proposed to predict both monotonic and cyclic softening in Inconel 718 superalloy at 650°C. The developed internal state variable is implemented in a crystal-plasticity model and is tested on uniaxial strain-controlled monotonic and cyclic loading as well as on uniaxial stress-controlled cyclic loading. The simulation results qualitatively and quantitatively predict strain-controlled monotonic softening/hardening responses depending on the strain rate as well as strain-controlled and stress-controlled cyclic softening/hardening as a function of the strain rate, the stress and strain amplitudes, and the mean stress. Furthermore, the prediction of ratcheting (rate and magnitude) is consistent with experimental results. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, Modeling and Simulation |