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

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.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [1]
  1. Arizona State University, Tempe, AZ (United States). Materials Science and Engineering.
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source
Publication Date:
OSTI Identifier:
1221416
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Materials Research Letters
Additional Journal Information:
Journal Volume: 2; Journal Issue: 4; Journal ID: ISSN 2166-3831
Publisher:
Taylor and Francis
Research Org:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE stress corrosion cracking; X-ray tomography; moisture; aluminum alloys