In situ three dimentional (3D) X-ray synchrotron tomography of corrosion fatigue in Al7075 alloy

Sudhanshu S. Singh, Jason J. Williams, X. Xiao, F. De Carlo, Nikhilesh Chawla

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

X-ray synchrotron tomography was used to investigate the fatigue corrosion behavior of Al7075-T651 alloys in a corrosive solution. Single edge-notch specimens machined along the L-T orientation were used for corrosion-fatigue testing, under a load ratio of R = 0.1. The evolution of reaction between the corrosive fluid and the metal was observed, as well as the formation of hydrogen bubbles. The shape of these bubble also changed significantly during the fatigue cycle. The fatigue crack growth rate was found to be significantly higher in the corrosive solution, compared to crack growth in air, for stress intensity levels between 5 and 10 MPa√m.

Original languageEnglish (US)
Title of host publicationMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012
Pages1430-1438
Number of pages9
StatePublished - Dec 1 2012
EventMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012 - Pittsburgh, PA, United States
Duration: Oct 7 2012Oct 11 2012

Publication series

NameMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012
Volume2

Other

OtherMaterials Science and Technology Conference and Exhibition 2012, MS and T 2012
CountryUnited States
CityPittsburgh, PA
Period10/7/1210/11/12

Keywords

  • Al7075
  • Bubbles
  • Corrosion products
  • EXCO
  • Fatigue crack growth
  • X-ray tomography

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

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  • Cite this

    Singh, S. S., Williams, J. J., Xiao, X., De Carlo, F., & Chawla, N. (2012). In situ three dimentional (3D) X-ray synchrotron tomography of corrosion fatigue in Al7075 alloy. In Materials Science and Technology Conference and Exhibition 2012, MS and T 2012 (pp. 1430-1438). (Materials Science and Technology Conference and Exhibition 2012, MS and T 2012; Vol. 2).