Influence of selective laser melting machine source on the dynamic properties of AlSi10Mg Alloy

Ben Amir, Shmuel Samuha, Oren Sadot

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Selective laser melting (SLM) AlSi10Mg alloy has been thoroughly investigated in terms of its microstructure and quasi-static properties, owing to its broad industrial applications. However, the effects of the SLM process on the dynamic behavior under impact conditions remain to be established. This research deals with the influences of manufacturing process parameters on the dynamic response of the SLM on AlSi10Mg at a high strain rate of 700 to 6700 s-1 by using a split Hopkinson pressure bar apparatus. Examinations were performed on vertically and horizontally built samples, processed individually by two manufacturers using a different laser scanning technique on the same powder composition. It was concluded that the fabrication technique does not influence the true stress-true strain dependency at strain rates of 700 to 2800 s-1. However, at higher strain rates (4000 to 6700 s-1), this study revealed different plastic behavior, which was associated only with the horizontally built samples. Moreover, this study found different failure demeanors at true strains exceeding 0.8. The dynamic response was correlated with the as-built microstructure and crystallographic texture, characterized using the electron backscattered diffraction technique.

Original languageEnglish
Article number1143
JournalMaterials
Volume12
Issue number7
DOIs
StatePublished - 1 Jan 2019

Keywords

  • AlSi10Mg alloy
  • Crystallographic texture
  • Dynamic properties
  • Impact
  • Selective laser melting

ASJC Scopus subject areas

  • General Materials Science

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