About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
Crystal Plasticity Modeling of Superelastic Behavior in High Temperature Shape Memory Alloys |
Author(s) |
Adrien R. Cassagne, Dimitris C Lagoudas, Jean-Briac Le Graverend |
On-Site Speaker (Planned) |
Adrien R. Cassagne |
Abstract Scope |
This study aims to evaluate superelastic properties of a polycrystalline High Temperature Shape Memory Alloy (HTSMA) using a crystal plasticity framework. Crystal plasticity is an approach that allows to compute materials behavior including viscoplastic contribution due to individual dislocations slip. Using thermodynamically based formulation, strain contributions from austenite-martensite transformation and viscoplasticity are computed. A recently developed scale transition rule for HTSMA is implemented in order to improve the representation of macro-meso scale relationships. A relation is indeed necessary to obtain local quantities from the imposed global stress. This transition rule adds both plastic and phase transforming interaction between the grains of the polycrystal in order to improve representation of hardening phenomenon between grains of the aggregate. |
Proceedings Inclusion? |
Planned: |
Keywords |
Phase Transformations, Modeling and Simulation, Mechanical Properties |