The adoption of metal additive manufacturing (AM) has tremendously increased over the years; however, it is still challenging to explain the fundamental physical phenomena occurring during these stochastic processes. To tackle this problem, we have constructed a custom metal AM system to simulate powder fed directed energy deposition. This instrument is integrated at the Cornell High Energy Synchrotron Source to conduct operando studies of the metal AM process. These operando experiments provide valuable data that can be used for various applications, such as (a) to study the response of the material to non-equilibrium solidification and intrinsic heat treatment and (b) to characterize changes in lattice plane spacing, which helps us calculate the thermo-mechanical history and resulting microstructural features. Such high-fidelity data are made possible by state-of-the-art direct-detection x-ray area detectors, which aid in the observation of solidification pathways of different metallic alloys. Furthermore, we discuss the various possibilities of analyzing the synchrotron dataset with examples across different measurement modes.
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July 2022
Research Article|
July 08 2022
Laser based directed energy deposition system for operando synchrotron x-ray experiments
Special Collection:
Operando systems for synchrotron studies of additive manufacturing processes
Adrita Dass
;
Adrita Dass
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing)
1
Sibley School of Mechanical and Aerospace Engineering, Cornell University
, Ithaca, New York 14853, USA
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Ashlee Gabourel;
Ashlee Gabourel
(Data curation, Methodology, Writing – review & editing)
1
Sibley School of Mechanical and Aerospace Engineering, Cornell University
, Ithaca, New York 14853, USA
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Darren Pagan;
Darren Pagan
a)
(Data curation, Investigation, Methodology, Resources, Writing – review & editing)
2
Cornell High Energy Synchrotron Source
, Ithaca, New York 14853, USA
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Atieh Moridi
Atieh Moridi
b)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Supervision, Writing – review & editing)
1
Sibley School of Mechanical and Aerospace Engineering, Cornell University
, Ithaca, New York 14853, USA
b)Author to whom correspondence should be addressed: [email protected]
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a)
Current address: Pennsylvania State University.
b)Author to whom correspondence should be addressed: [email protected]
Note: Paper published as part of the Special Topic on Operando Systems for Synchrotron Studies of Additive Manufacturing Processes.
Rev. Sci. Instrum. 93, 075106 (2022)
Article history
Received:
December 07 2021
Accepted:
June 15 2022
Citation
Adrita Dass, Ashlee Gabourel, Darren Pagan, Atieh Moridi; Laser based directed energy deposition system for operando synchrotron x-ray experiments. Rev. Sci. Instrum. 1 July 2022; 93 (7): 075106. https://doi.org/10.1063/5.0081186
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