Deformation of AlSi10Mg parts manufactured by Laser Powder Bed Fusion: In-situ measurements incorporating X-ray micro computed tomography and a micro testing stage

Joachim Koelblin* (Corresponding Author), James Hastie, Mehmet Kartal, Amir Siddiq, Moataz M Attallah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The latest advances in optimising the process parameters of laser powder bed fusion (LPBF) result in high densification part. Nonetheless, slight variations of those parameters or the use of recycled powder leads to sub-optimal parts, containing more defects. AlSi10Mg samples were produced by LPBF using recycled powder to study the effect of process-induced defects and their evolution under increased tensile load. This is achieved by employing an in-situ micro testing stage combined with high-resolution X-ray micro computed tomography (XμCT). This combined approach provides three-dimensional (3D) images at multiple load increments. These images are then used to calculate the internal strains between defects in subsequent loading stages and are reported in this work.
Original languageEnglish
Pages (from-to)168-172
Number of pages5
JournalProcedia Structural Integrity
Volume35
Early online date8 Jan 2022
DOIs
Publication statusPublished - Jan 2022

Keywords

  • Laser powder bed fusion
  • Selective laser melting
  • Tensile testing
  • Internal porosity
  • in-situ X-ray computed tomography
  • Digital image correlation

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