About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing: Process-induced Microstructures and Defects
|
Presentation Title |
F-49: Nanotechnology-enabled Wire Arc Direct Energy Deposition of Aluminum Alloy 2024 |
Author(s) |
Yitian Chi, Xiaochun Li |
On-Site Speaker (Planned) |
Yitian Chi |
Abstract Scope |
With a high specific strength and good fatigue resistance, aluminum alloy AA2024 has drawn enormous attention from both industry and academia. Despite the advantages offered by AA2024, it cannot be manufactured via fusion-based printing because of hot cracking and other solidification problems. Nano-treating is an emerging nanotech metallurgy method that uses a small fraction of nanoparticles to enhance alloy manufacturability and properties. This work shows the unprecedented success of nanotechnology-enabled wire-arc direct energy deposition of nano-treated AA2024 components. The resulting parts were crack-free with fine and equiaxed grains at an average size of 23.2 ± 0.4 μm. Microhardness profiles show homogeneous mechanical performance along the build direction, regardless of cyclic thermal exposure. Finally, excellent tensile strength and elongation up to 428 MPa and 7.4% were achieved after heat treatment. The combined results show a great promise of nanotechnology in Additive Manufacturing of high-strength aluminum alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nanotechnology, Additive Manufacturing, Aluminum |