3D strain pattern in additively manufactured AlSi10Mg from digital volume correlation

Xinyang Gao, Yubin Zhang, Lasse Haahr-Lillevang, Nikolaj Kjelgaard Vedel-Smith, Tito Andriollo*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Although much research has focused on AlSi10Mg processed via laser-based powder bed fusion, the material deformation mechanisms at the microscale are still unclear. To improve the current understanding, 3D measurements of the strain field at the microstructural scale are needed to complement surface-based SEM observations. This work demonstrates that X-ray tomography combined with digital volume correlation can be used to measure the strain in the bulk of AlSi10Mg using the Si-rich particles contained in the heat-treated microstructure as markers. The method allows for measuring strains larger than 0.5 % with a spatial resolution of 35 μm and it can thus be used to study the impact of factors like porosity distribution or crystallographic texture on the material deformation and damage mechanisms.

Original languageEnglish
Article numbere23186
JournalHeliyon
Volume9
Issue number12
Number of pages6
ISSN2405-8440
DOIs
Publication statusPublished - 2023

Keywords

  • AlSi10Mg
  • Digital volume correlation
  • Heterogeneities
  • Laser-based powder bed fusion
  • Strain
  • X-ray tomography

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