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Location-Specific Microstructure Characterization Within IN625 Additive Manufacturing Benchmark Test Artifacts

  • Thematic Section: Additive Manufacturing Benchmarks 2018
  • Published:
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Abstract

Additive manufacturing (AM) of alloys creates segregated microstructures with significant differences from those of traditional wrought alloys. Understanding how the local build conditions generate specific microstructures is essential for developing post-build heat treatments with the goal of producing parts with reliable and predictable properties. This research examines the position- and orientation-dependent microstructures within IN625 Additive Manufacturing Benchmark Test specimens, including three-dimensional AM builds and individual laser traces on bare metal plates. Detailed characterizations of the solidification microstructures, compositional heterogeneities, grain structures and orientations, and melt pool geometries are described.

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Notes

  1. Certain commercial entities, equipment, or materials may be identified in this document to describe an experimental procedure or concept adequately. Such identification is not intended to imply recommendation or endorsement by the National Institute of Standards and Technology, nor is it intended to imply that the entities, materials, or equipment are necessarily the best available for the purpose.

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Acknowledgements

Part of this research was supported by the Exascale Computing Project (17-SC-20-SC), a collaborative effort of the U.S. Department of Energy Office of Science and the National Nuclear Security Administration.

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Authors and Affiliations

  1. Materials Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Dr, Gaithersburg, MD, 20899, USA

    M. R. Stoudt, M. E. Williams, L. E. Levine, A. Creuziger & S. A. Young

  2. Engineering Laboratory, National Institute of Standards and Technology, 100 Bureau Dr, Gaithersburg, MD, 20899, USA

    J. C. Heigel, B. M. Lane & T. Q. Phan

Authors
  1. M. R. Stoudt
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  2. M. E. Williams
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  3. L. E. Levine
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  4. A. Creuziger
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  6. J. C. Heigel
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Correspondence to L. E. Levine.

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Stoudt, M.R., Williams, M.E., Levine, L.E. et al. Location-Specific Microstructure Characterization Within IN625 Additive Manufacturing Benchmark Test Artifacts. Integr Mater Manuf Innov 9, 54–69 (2020). https://doi.org/10.1007/s40192-020-00172-6

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