About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques III
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Presentation Title |
OpeN-AM: A Wire-Arc Deposition System for Operando Neutron Diffraction |
Author(s) |
Alex J. Plotkowski, Chris Fancher, Rangasayee Kannan, James Haley, Dean Pierce, Jesse Heineman, Joshua Vaughan, Kyle Saleeby, Ke An, Guru Madireddy, Yousub Lee, Thomas Feldhausen, Dunji Yu, Suresh Babu |
On-Site Speaker (Planned) |
Alex J. Plotkowski |
Abstract Scope |
Wire-arc directed deposition is promising for large scale metal additive manufacturing. However, complex thermal cycles affect phase transformations, microstructure, and stresses, ultimately determining the properties and performance of finished components. To investigate these effects, we have constructed OpeN-AM, a wire-arc DED platform to enable operando neutron diffraction measurements at Oak Ridge National Laboratory’s Spallation Neutron Source. The system includes robotic wire-arc deposition, an actively cooled substrate, optical and thermal sensors an open-source control system, and an edge computing node for high-bandwidth data collection. Builds may be performed for time-resolved diffraction measurements, and maps of diffraction data may be collected at intermediate times. The capabilities of OpeN-AM were demonstrated for mild steel and a low-temperature transformation (LTT) steel, in which residual stresses are significantly affected by the austenite-to-martensite transformation. This presentation will describe the manufacturing system, experimental approach, neutron data analysis, and conclusions drawn from experiments in deposition under different conditions. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, Iron and Steel |