About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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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 |