Impact of powder recoating speed on built properties in PBF-LB process

Laura Cordova*, Zhuoer Chen

*Corresponding author for this work

Research output: Contribution to journalConference articleAcademicpeer-review

2 Citations (Scopus)
116 Downloads (Pure)

Abstract

In powder bed fusion laser-beam (PBF-LB), powder deposition parameters are not commonly adjusted for different materials. In this study, the recoater speed was varied from 150 mm/s to 500 mm/s to study its influence on processability of two different powders. The 420 steel powder possesses better flowability and higher packing density than Inconel 718 at different testing speeds. This is reflected on surface roughness (Sa): Inconel 718 samples show larger variations than 420 steel ones across different locations on the build plate and under different recoating speeds. This demonstrates the necessity of accounting for powder properties for robust PBF-LB processing.

Original languageEnglish
Pages (from-to)125-129
Number of pages5
JournalProcedia CIRP
Volume115
DOIs
Publication statusPublished - 2022
Event10th CIRP Global Web Conference on Material Aspects of Manufacturing Processes 2022 - Gothenburg, Sweden
Duration: 25 Oct 202227 Oct 2022
Conference number: 10

Keywords

  • LPBF
  • Porosity
  • Powder Bed Fusion - Laser Beam
  • Recoating
  • Surface roughness

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