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PUBLICATIONS

CHARACTERIZATION OF ANOMALOUS (ATYPICAL) SOLIDIFIED MELT POOLS IN NICKEL SUPERALLOY 625 LASER POWDER BED FUSION

Published

Author(s)

Christopher Evans, Jesse Redford, Jason Fox, Jordan Weaver

Abstract

In Laser Powder Bed Fusion (LBPF) for metal additive manufacturing, a combination of feedstock and processing parameters such as laser power and scan velocity, combined with part geometry can result in overheating and formation of localized anomalous melt pools. Differences in cooling rates result in atypical surface and subsurface characteristics. These anomalous melt pools cool and are shaped into solid masses of widely ranging sizes driven by the part geometry and a variety of thermo-physical processes. Differences in melt pool geometry, and especially depth, will result in changes in cooling rates and, hence in local microstructure as shown in King et al.
Proceedings Title
Proceedings of 2024 ASPE-euspen Summer Topical Meeting on Advancing Precision in Additive Manufacturing
Conference Dates
July 15-19, 2024
Conference Location
Golden, CO, US
Conference Title
2024 ASPE-euspen Summer Topical Meeting on Advancing Precision in Additive Manufacturing
Pub Type
Conferences

Download Paper

Local Download
Metrology and Manufacturing

Citation

Evans, C. , Redford, J. , Fox, J. and Weaver, J. (2024), CHARACTERIZATION OF ANOMALOUS (ATYPICAL) SOLIDIFIED MELT POOLS IN NICKEL SUPERALLOY 625 LASER POWDER BED FUSION, Proceedings of 2024 ASPE-euspen Summer Topical Meeting on Advancing Precision in Additive Manufacturing, Golden, CO, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=958244 (Accessed October 9, 2025)

Issues

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Created July 15, 2024, Updated March 17, 2025
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