About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
Presentation Title |
A Novel Multiaxial Strain-Life Approach for Nickel-base Superalloys |
Author(s) |
Firat Irmak, Ali Gordon |
On-Site Speaker (Planned) |
Firat Irmak |
Abstract Scope |
Nickel-base superalloys (NBSAs) are a group of materials that are extensively used in high-temperature applications such as aero and industrial gas turbine applications. These alloys can endure high temperatures and stresses for extended periods, they also exhibit excellent fatigue life and corrosion-resistant properties. Multiaxial states of stress and strain are very common in engineered parts. Components such as crankshafts, pressure vessels, welded joints, heavy construction equipment, and the like experience external loads in multiple axes. Multiaxial approaches have been introduced to give improved predictions of fatigue life under complex states compared to what can be attained with uniaxial methods alone. A novel multiaxial strain-based life approach is developed in this study. A yield criterion, developed by the authors, is utilized to obtain effective strain values and to capture multiaxial state of strain. This approach is exercised and compared with experimental data from various single crystal (SX) NBSAs. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Mechanical Properties, Copper / Nickel / Cobalt |