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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:
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 Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; stress corrosion cracking; X-ray tomography; moisture; aluminum alloys
OSTI Identifier:
1221416

Singh, S. S., Williams, J. J., Lin, M. F., Xiao, X., De Carlo, F., and Chawla, N.. In situ investigation of high humidity stress corrosion cracking of 7075 aluminum alloy by three-dimensional (3D) X-ray synchrotron tomography. United States: N. p., Web. doi:10.1080/21663831.2014.918907.
Singh, S. S., Williams, J. J., Lin, M. F., Xiao, X., De Carlo, F., & Chawla, N.. In situ investigation of high humidity stress corrosion cracking of 7075 aluminum alloy by three-dimensional (3D) X-ray synchrotron tomography. United States. doi:10.1080/21663831.2014.918907.
Singh, S. S., Williams, J. J., Lin, M. F., Xiao, X., De Carlo, F., and Chawla, N.. 2014. "In situ investigation of high humidity stress corrosion cracking of 7075 aluminum alloy by three-dimensional (3D) X-ray synchrotron tomography". United States. doi:10.1080/21663831.2014.918907. https://www.osti.gov/servlets/purl/1221416.
@article{osti_1221416,
title = {In situ investigation of high humidity stress corrosion cracking of 7075 aluminum alloy by three-dimensional (3D) X-ray synchrotron tomography},
author = {Singh, S. S. and Williams, J. J. and Lin, M. F. and Xiao, X. and De Carlo, F. and Chawla, N.},
abstractNote = {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.},
doi = {10.1080/21663831.2014.918907},
journal = {Materials Research Letters},
number = 4,
volume = 2,
place = {United States},
year = {2014},
month = {5}
}