Communications Materials (Feb 2023)

High frequency beam oscillation keyhole dynamics in laser melting revealed by in-situ x-ray imaging

  • Ziheng Wu,
  • Guannan Tang,
  • Samuel J. Clark,
  • Andrey Meshkov,
  • Subhrajit Roychowdhury,
  • Benjamin Gould,
  • Victor Ostroverkhov,
  • Thomas Adcock,
  • Steven J. Duclos,
  • Kamel Fezzaa,
  • Christopher Immer,
  • Anthony D. Rollett

DOI
https://doi.org/10.1038/s43246-023-00332-z
Journal volume & issue
Vol. 4, no. 1
pp. 1 – 10

Abstract

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Beam oscillation is an attractive method to achieve melt pool and microstructure control in laser powder bed additive manufacturing. Here, in-situ X-ray imaging and high-fidelity modeling reveal the unique keyhole dynamics in a kHz laser oscillation mode.