Journal Article

PUBDB-2026-00760

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Investigation of the formation and reduction of hydrogen porosity during laser welding of additively manufactured AlSi10Mg parts

Kramer, S. (Corresponding author)Extern* ; Lubkowitz, V. ; Haas, M. ; Michel, J. ; Spurk, C. ; Olowinsky, A. ; Faria, G. A. ; Jarwitz, M. ; Graf, T. ; Schulze, V. ; Zanger, F.

2026
Springer London

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Please use a persistent id in citations: doi:10.1007/s00170-025-17198-9  doi:10.3204/PUBDB-2026-00760

Abstract: With the increasing industrial implementation of additively manufactured metal parts, the welding of such components gains importance. Due to size limitations of laser powder-bed fusion (PBF-LB) machines and design constraints, subsequent joining processes are required. However, the weld seam quality of PBF-LB manufactured parts, particularly aluminum parts, is still limited by pore formation in the weld seam. These pores are believed to be primarily caused by the agglomeration of hydrogen. Therefore, this study investigates the pore formation during laser beam welding of PBF-LB manufactured AlSi10Mg parts by means of in-situ high-speed synchrotron X-ray imaging. In addition, an in-situ laser powder drying process is investigated to reduce the hydrogen content of PBF-LB manufactured aluminum parts in order to prevent the formation of hydrogen porosity during the subsequent welding process. Results show that pores predominantly form in the interdendritic region at the solidification front due to the locally increased hydrogen concentration. By applying laser powder dryin

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Helmholtz-Zentrum Hereon (Hereon)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: BAG-20230679 (BAG-20230679) (BAG-20230679)
3. DFG project G:(GEPRIS)236616214 - SFB 1120: Bauteilpräzision durch Beherrschung von Schmelze und Erstarrung in Produktionsprozessen (236616214) (236616214)

Experiment(s):

1. PETRA Beamline P61.1 (PETRA III)

Appears in the scientific report 2026

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; DEAL Springer ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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