About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
Framework to Model Single crystal and Directionally Solidified Nickel Base Superalloys under a Wide Range of Monotonic, Cyclic, Thermomechanical Fatigue and Creep Fatigue Conditions |
Author(s) |
Navindra Wijeyeratne, Ali P Gordon |
On-Site Speaker (Planned) |
Navindra Wijeyeratne |
Abstract Scope |
Nickel base superalloys (NBSAs) are a type of material that is primarily utilized in high-temperature applications due to their superior material properties at elevated temperatures. Single crystal (SX) and directionally solidified (DS) are widely utilized to develop components such as gas turbine blades. During the development, phase is essential to understand the behavior of the material under certain loading conditions. Thus, developing a framework that combines experimental data with theoretical mechanics and numerical simulations is vital. In NBSAs plasticity is induced at the slip system level. Crystal viscoplasticity (CVP) theory models the effects of crystallographic slip to provide a more accurate description of the effects of plasticity, enabling it to capture these materials' orientation rate, temperature, and history-dependence under a variety of conditions. A complete framework utilizing CVP theory and a novel optimization scheme is developed to model the thermomechanical fatigue and creep-fatigue behavior of any SX and DS NBSAs. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Computational Materials Science & Engineering, Mechanical Properties |