Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Corrosion Fatigue of Austenitic Stainless Steel in Different Hot Chloride Solutions

  • Visser, A. (CD Laboratory of Localized Corrosion, Montanuniversitaet Leoben) ;
  • Mori, G. (CD Laboratory of Localized Corrosion, Montanuniversitaet Leoben) ;
  • Panzenbock, M. (Department of Physical Metallurgy and Materials Testing, Montanuniversitaet Leoben) ;
  • Pippan, R. (Erich Schmid Institute of Materials Science, Austrian Academy of Science)
  • Received : 2015.06.12
  • Accepted : 2015.07.09
  • Published : 2015.08.31
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Abstract

Austenitic stainless steel was investigated under cyclic loading in electrolytes with different chloride contents and pH and at different temperatures. The testing solutions were 13.2 % NaCl (80,000 ppm $Cl^-$) at $80^{\circ}C$and 43 % $CaCl_2$ (275,000 ppm $Cl^-$) at $120^{\circ}C$. In addition to S-N curves in inert and corrosive media, the fracture surfaces were investigated with a scanning electron microscope (SEM) to analyse the type of attack. The experimental results showed that a sharp decrease in corrosion fatigue properties can be correlated with the occurrence of stress corrosion cracking. The correlation of occurring types of damage in different corrosion systems is described.

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