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

Published

Author(s)

Mark R. Stoudt, Maureen E. Williams, Lyle E. Levine, Adam Abel Creuziger, Sandra A. Young, Jarred C. Heigel, Brandon Lane, Thien Q. Phan

Abstract

Additive manufacturing (AM) of metals 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.
Citation
Integrating Materials and Manufacturing Innovation
Issue
9

Keywords

additive manufacturing, benchmark measurements, microstructure characterization

Citation

Stoudt, M. , Williams, M. , Levine, L. , Creuziger, A. , Young, S. , Heigel, J. , Lane, B. and Phan, T. (2020), Location-specific Microstructure Characterization Within IN625 Additive Manufacturing Benchmark Test Artifacts, Integrating Materials and Manufacturing Innovation, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=928265 (Accessed October 20, 2021)
Created March 2, 2020, Updated October 12, 2021