About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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Presentation Title |
Phase Transformations in Hexagonal Closed Packed Materials during Ultrasonic Additive Manufacturing |
Author(s) |
Michael B. Pagan, Ningxiner Zhao, Leon Headings, Marcelo J. Dapino, Andres Marquez Rossy, Reece Emergy, Philip D. Rack, Caleb Massey, Steve Zinkle, Suresh Babu |
On-Site Speaker (Planned) |
Michael B. Pagan |
Abstract Scope |
During ultrasonic additive manufacturing (UAM), high strain rate plastic deformation results in solid-state bonding. This allows for bonding of dissimilar or difficult to weld materials, although it is currently limited to soft FCC metals. Stronger HCP metals such as titanium typically resist plastic deformation, and are more likely to tear, shear, and break apart instead. We demonstrate successful bonding of HCP titanium through creating heterogeneous material structures which are designed for metallurgical compatibility. The resulting microstructure is characterized using electron microscopy, energy dispersive spectroscopy, electron backscatter diffraction, and x-ray diffraction. The UAM deformation process creates significant deviations from thermodynamic equilibria, as determined from through computational thermodynamics. This work demonstrates how UAM can be used for ultrasonic welding of HCP metals, and it demonstrates the effects of severe plastic deformation on the microstructure of these materials. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Phase Transformations |