3D X-ray microtomography and mechanical characterization of corrosion-induced damage in 7075 aluminium (Al) alloys

Renuka Vallabhaneni, Tyler J. Stannard, C. Shashank Kaira, Nikhilesh Chawla

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We report on the 3D microstructure, composition and mechanical properties in the corroded region of Al (7075-T651) alloy corroded in 3.5 wt.% NaCl. Visualization and quantification of the microstructure was conducted using X-ray tomography with a focus on change in dimensions of pits with increasing corrosion. The variation of tensile strength with corrosion and its relationship with microstructure was also studied. Compositional analysis using EDS, coupled with nanoindentation, showed a partially corroded region adjacent to the corrosion product layer.

Original languageEnglish (US)
JournalCorrosion Science
DOIs
StateAccepted/In press - Jan 1 2018

Keywords

  • 3.5 wt.% NaCl
  • 7075 aluminium
  • Corrosion
  • Nanoindentation
  • Pits
  • X-ray tomography

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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