In situ investigation of high humidity stress corrosion cracking of 7075 aluminum alloy by three-dimensional (3D) X-ray synchrotron tomography

S. S. Singh, J. J. Williams, M. F. Lin, X. Xiao, F. De Carlo, Nikhilesh Chawla

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

In situ X-ray synchrotron tomography was used to investigate the stress corrosion cracking behavior of under-aged Al-Zn-Mg-Cu alloy in moisture. The discontinuous surface cracks (crack jumps) mentioned in the literature are actually a single continuous and tortuous crack when observed in three dimension (3D). Contrary to 2D measurements made at the surface which suggest non-uniform crack growth rates, 3D measurements of the crack length led to a much more accurate measurement of crack growth rates.

Original languageEnglish (US)
Pages (from-to)217-220
Number of pages4
JournalMaterials Research Letters
Volume2
Issue number4
DOIs
StatePublished - Jan 1 2014

Keywords

  • Aluminum alloys
  • Moisture
  • Stress corrosion cracking
  • X-ray tomography

ASJC Scopus subject areas

  • Materials Science(all)

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