Growth of β intermetallic in an Al-Cu-Si alloy during directional solidification via machine learned 4D quantification

B. Cai, A. Kao, P.d. Lee, E. Boller, H. Basevi, A.b. Phillion, A. Leonardis, K. Pericleous

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
73 Downloads (Pure)

Abstract

Fe contamination is a serious composition barrier for Al recycling. In Fe-containing Al-Si-Cu alloy, a brittle and plate-shaped β phase forms, degrading the mechanical properties. Here, 4D (3D plus time) synchrotron X-ray tomography was used to observe the directional solidification of Fe-containing Al-Si-Cu alloy. The quantification of the coupled growth of the primary and β phase via machine learning and particle tracking, demonstrates that the final size of the β intermetallics were strongly influenced by the solute segregation and space available for growth whereas the β orientation was controlled by the temperature gradient direction. The work can be used to validate predictive models.
Original languageEnglish
Pages (from-to)29-33
Number of pages5
JournalScripta Materialia
Volume165
Early online date15 Feb 2019
DOIs
Publication statusPublished - May 2019

Keywords

  • 4D imaging
  • Al alloys
  • Intermetallics
  • Synchrotron X-ray tomography

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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