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Title: Ultrafast X-ray imaging of laser–metal additive manufacturing processes

Abstract

The high-speed synchrotron X-ray imaging technique was synchronized with a custom-built laser-melting setup to capture the dynamics of laser powder-bed fusion processesin situ. Various significant phenomena, including vapor-depression and melt-pool dynamics and powder-spatter ejection, were captured with high spatial and temporal resolution. Imaging frame rates of up to 10 MHz were used to capture the rapid changes in these highly dynamic phenomena. At the same time, relatively slow frame rates were employed to capture large-scale changes during the process. This experimental platform will be vital in the further understanding of laser additive manufacturing processes and will be particularly helpful in guiding efforts to reduce or eliminate microstructural defects in additively manufactured parts.

Authors:
ORCiD logo; ; ; ; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
University of Missouri System; University of Utah; Honeywell Federal Manufacturing and Technologies, LLC; USDOE Office of Science (SC)
OSTI Identifier:
1481907
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Journal of Synchrotron Radiation (Online)
Additional Journal Information:
Journal Volume: 25; Journal Issue: 5; Journal ID: ISSN 1600-5775
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English
Subject:
laser powder bed fusion; melt pool; particle ejection; vapor depression; x-ray imaging

Citation Formats

Parab, Niranjan D., Zhao, Cang, Cunningham, Ross, Escano, Luis I., Fezzaa, Kamel, Everhart, Wes, Rollett, Anthony D., Chen, Lianyi, and Sun, Tao. Ultrafast X-ray imaging of laser–metal additive manufacturing processes. United States: N. p., 2018. Web. doi:10.1107/S1600577518009554.
Parab, Niranjan D., Zhao, Cang, Cunningham, Ross, Escano, Luis I., Fezzaa, Kamel, Everhart, Wes, Rollett, Anthony D., Chen, Lianyi, & Sun, Tao. Ultrafast X-ray imaging of laser–metal additive manufacturing processes. United States. doi:10.1107/S1600577518009554.
Parab, Niranjan D., Zhao, Cang, Cunningham, Ross, Escano, Luis I., Fezzaa, Kamel, Everhart, Wes, Rollett, Anthony D., Chen, Lianyi, and Sun, Tao. Tue . "Ultrafast X-ray imaging of laser–metal additive manufacturing processes". United States. doi:10.1107/S1600577518009554.
@article{osti_1481907,
title = {Ultrafast X-ray imaging of laser–metal additive manufacturing processes},
author = {Parab, Niranjan D. and Zhao, Cang and Cunningham, Ross and Escano, Luis I. and Fezzaa, Kamel and Everhart, Wes and Rollett, Anthony D. and Chen, Lianyi and Sun, Tao},
abstractNote = {The high-speed synchrotron X-ray imaging technique was synchronized with a custom-built laser-melting setup to capture the dynamics of laser powder-bed fusion processesin situ. Various significant phenomena, including vapor-depression and melt-pool dynamics and powder-spatter ejection, were captured with high spatial and temporal resolution. Imaging frame rates of up to 10 MHz were used to capture the rapid changes in these highly dynamic phenomena. At the same time, relatively slow frame rates were employed to capture large-scale changes during the process. This experimental platform will be vital in the further understanding of laser additive manufacturing processes and will be particularly helpful in guiding efforts to reduce or eliminate microstructural defects in additively manufactured parts.},
doi = {10.1107/S1600577518009554},
journal = {Journal of Synchrotron Radiation (Online)},
issn = {1600-5775},
number = 5,
volume = 25,
place = {United States},
year = {2018},
month = {8}
}