About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Fatigue and Fracture: Effects of Surface Roughness, Residual Stress, and Environment
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Presentation Title |
Fatigue of L-PBF Ti-6242 under Different Heat Treatment Processes, and Comparisons to Ti64 |
Author(s) |
Amir Hadadzadeh, Mahdi Habibnejad Korayem, Reza Molaei |
On-Site Speaker (Planned) |
Reza Molaei |
Abstract Scope |
While titanium and its alloys are known for their excellent creep resistance as well as high strengths, their applications are mostly limited to about 400℃. However, a recently manufactured alloy, Ti6242 (Ti-6Al-2Sn-4Zr-2Mo-0.08Si) can be used for long-term high temperature applications up to 540℃, making it a better candidate for aerospace applications such as jet engine components and industrial gas turbines.
Despite the higher strength, this alloy is highly sensitive to the heat treatment processes. 8 different heat treatment procedures were designed and applied to the L-PBF samples under monotonic loading, and the results indicated that different processes can significantly affect strength and ductility of the specimens.
Due to the cyclic nature of the applied stresses in the operational environments, their cyclic and fatigue properties are of utmost important considerations. Specimens fabricated with different heat treatments will be tested under both elastic and plastic loads and the results will be compared. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Titanium |