NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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 13, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created July 15, 2024, Updated March 17, 2025
Was this page helpful?