In Situ Analysis of Laser Powder Bed Fusion Using Simultaneous High-Speed Infrared and X-ray Imaging

Gould, Benjamin; Wolff, Sarah; Parab, Niranjan; Zhao, Cang; Lorenzo-Martin, Maria Cinta; Fezzaa, Kamel; Greco, Aaron; Sun, Tao

doi:10.1007/s11837-020-04291-5

In Situ Analysis of Laser Powder Bed Fusion Using Simultaneous High-Speed Infrared and X-ray Imaging

Journal Article · Mon Jul 27 00:00:00 EDT 2020 · JOM. Journal of the Minerals, Metals & Materials Society

DOI:https://doi.org/10.1007/s11837-020-04291-5· OSTI ID:1774604

^[1]; Wolff, Sarah ^[1]; Parab, Niranjan ^[1]; Zhao, Cang ^[1]; Lorenzo-Martin, Maria Cinta ^[1]; Fezzaa, Kamel ^[1]; Greco, Aaron ^[1]; Sun, Tao ^[1]

Argonne National Lab. (ANL), Argonne, IL (United States)

Laser powder bed fusion is a metal additive manufacturing technique that has received significant scientific and industrial attention over the past decades. However, the quality and reproducibility of parts manufactured by this technique is still a problem. Overcoming this issue requires an understanding of multiple complex physical phenomena which occur simultaneously during the process. Here, we illustrate a powerful new technique which synchronizes high-speed x-ray imaging with high-speed infrared imaging to study laser powder bed fusion processes in real time. Using this technique, we demonstrate the simultaneous observation of multiple phenomena including three-dimensional melt pool visualization, vapor plume dynamics, spatter formation, thermal history, and point cooling rates. The paired observation of these dynamic phenomena is critical to understanding the fundamentals of laser powder bed fusion, and the overall impact of process parameters on print quality.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Sponsoring Organization:: USDOE Office of Science; USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1774604

Journal Information:: JOM. Journal of the Minerals, Metals & Materials Society, Journal Name: JOM. Journal of the Minerals, Metals & Materials Society Journal Issue: 1 Vol. 73; ISSN 1047-4838

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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