About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Rapid Characterization of Solidification Phase Transition of Additive Aluminum Alloy |
Author(s) |
Fan Zhang, Andrew Iams, Feng Yi, David LaVan, Jordan Weaver, Brandon Lane, Qilin Guo, Jiandong Yuan, Lianyi Chen, Andrew Chihpin Chuang, Darby LaPlant, John Hunter Martin |
On-Site Speaker (Planned) |
Fan Zhang |
Abstract Scope |
Metal-based additive manufacturing (AM) is among the most heavily pursued advanced manufacturing technologies worldwide. Reliable data that capture the transient microstructural transformations during an AM build remain scarce, primarily due to challenges associated with rapid nonequilibrium phase transformations at extreme cooling and heating rates (up to 10^6 K/s) and repeated thermal cycling in a layer-by-layer fabrication. We performed in situ, high-speed thermal and synchrotron-based diffraction measurements on an advanced, commercially available AM aluminum alloy to provide direct and quantifiable data of the phase transitions under various AM build conditions. Our high-resolution ex-situ electron microscope measurements complemented the in situ measurements. They enabled us to understand the solidification pathway in some of the best-performing AM aluminum alloys with a bimodal grain microstructure. Our measurements also provide high-fidelity thermodynamics data for alloy design and accelerate AM aluminum and other commercially important alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Aluminum, Characterization, Solidification |