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 |
The Role of Cellular Microstructures on the Fatigue Behavior of Additively Manufactured Al Alloys |
Author(s) |
Emine Tekerek, Lars Jacquemetton, Darren Beckett, Scott Halliday, Jorg M. K. Wiezorek, Antonios Kontsos |
On-Site Speaker (Planned) |
Emine Tekerek |
Abstract Scope |
Re-melting and rapid solidification during metal additive manufacturing (AM) lead to the formation of complex and cell-like microstructures. Understanding the role therefore of such microstructural characteristics on the processing-microstructure-properties-behavior relationships is crucial. In this talk, AM Al-Si-Mg alloy is used due to their enhanced mechanical properties attributed to the interaction between dislocation tangles and cellular structures. However, there is still gaps in understanding the effect of these cellular structures on the formation of early sites of fatigue crack initiation. In this respect, ex-situ rapid solidification will be reported and correlated with the melt-pool microstructure evolution. Furthermore, results from NDE methods coupled with in-situ mechanical testing and microstructural characterization will be reported. X-ray tomography and profiler measurements will be presented to characterize porosity and roughness level and combined with the experimental results to report the role of cellular structures on the initiation and development of localized cyclic damage for AM metals. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Aluminum |