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, James C. Hastie, Mehmet E. Kartal, Amir Siddiq, Moataz M. Attallah

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

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
DOIs
Publication statusPublished - 8 Jan 2022
Event2nd International Workshop on Plasticity, Damage and Fracture of Engineering Materials, IWPDF 2021 - Ankara, Turkey
Duration: 18 Aug 202120 Aug 2021

Bibliographical note

Funding Information:
The authors gratefully acknowledge the financial support of the Engineering and Physical Sciences Research Council (EPSRC) under grant reference EP/R021694/1, 3D“ in-situ based methodology for optimizing the mechanical performance of selective laser melted aluminium alloys.”

Publisher Copyright:
© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of IWPDF 2021 Chair, Tuncay Yalçinkaya

Keywords

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

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Civil and Structural Engineering
  • Materials Science(all)

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