Use of Neutron Scattering to Inform the Science of Additive Manufacturing
ORAL · Invited
Abstract
Additive Manufacturing (AM), often called 3D printing, offers the unique opportunity to transform how materials are consolidated into bulk 3D structures. The localized melt strategies in metal AM introduce non-equilibrium thermal conditions that can affect the microstructure and phase evolution in as-fabricated parts. Steep thermal gradients (~103-5 K/s) can lead the presence of metastable phase. This talk will preset how researchers at the Manufacturing Demonstration Facility at ORNL leverage neutron scattering tool to determining how AM affects the state of as-fabricated components, e.g., lattice strain and phase stability. This talk will conclude with an overview of the sample environment to study transient phases and bulk stress evolution during metal DED using the engineering diffractometer VULCAN-X at the Spallation Neutron Source.
*This research is sponsored by the Laboratory Directed Research and Development (LDRD) Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy. This research used resources at the High Flux Isotope Reactor and Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.
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Presenters
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Chris Fancher
- Oak Ridge National Laboratory