This study addresses the effect of plastic deformation on the dissolution corrosion behavior of a Type 316L austenitic stainless steel. Dissolution corrosion was promoted by low oxygen conditions in liquid lead-bismuth eutectic (LBE). Specimens with controlled degree of plastic deformation (20%, 40%, and 60%) and a non-deformed, solution-annealed specimen were simultaneously exposed for 1,000 h at 500°C to static LBE with low oxygen concentration ([O] < 10−11 mass%). The corroded specimens were analyzed by various material characterization techniques. All exposed specimens exhibited dissolution corrosion. The non-deformed steel showed the least dissolution attack (maximum depth: 36 μm), while the severity of attack increased with the degree of steel deformation (maximum depth in the 60% steel: 96 μm). It was, thus, concluded that increasing the amount of plastic deformation in a Type 316L stainless steel results in higher dissolution corrosion damages for steels exposed to low oxygen LBE conditions. Additionally, it was observed that the presence of chemical bands and δ-ferrite inclusions in a Type 316L steel affected its dissolution corrosion behavior.
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1 September 2017
CORROSION SCIENCE SECTION|
April 28 2017
Influence of Plastic Deformation on Dissolution Corrosion of Type 316L Austenitic Stainless Steel in Static, Oxygen-Poor Liquid Lead-Bismuth Eutectic at 500°C
Oksana Klok;
Oksana Klok
‡
*Vrije Universiteit Brussel (VUB), Electrochemical and Surface Engineering (SURF), Pleinlaan 2, B-1050 Brussel, Belgium.
**SCK·CEN, Boeretang 200, B-2400 Mol, Belgium.
‡Corresponding author. E-mail: [email protected].
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Konstantina Lambrinou;
Konstantina Lambrinou
**SCK·CEN, Boeretang 200, B-2400 Mol, Belgium.
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Serguei Gavrilov;
Serguei Gavrilov
**SCK·CEN, Boeretang 200, B-2400 Mol, Belgium.
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Erich Stergar;
Erich Stergar
**SCK·CEN, Boeretang 200, B-2400 Mol, Belgium.
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Tom Van der Donck;
Tom Van der Donck
***KU Leuven, Department of Materials Engineering, Kasteelpark Arenberg 44, B-3001 Leuven, Belgium.
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Shuigen Huang;
Shuigen Huang
***KU Leuven, Department of Materials Engineering, Kasteelpark Arenberg 44, B-3001 Leuven, Belgium.
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Bensu Tunca;
Bensu Tunca
**SCK·CEN, Boeretang 200, B-2400 Mol, Belgium.
***KU Leuven, Department of Materials Engineering, Kasteelpark Arenberg 44, B-3001 Leuven, Belgium.
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Iris De Graeve
Iris De Graeve
*Vrije Universiteit Brussel (VUB), Electrochemical and Surface Engineering (SURF), Pleinlaan 2, B-1050 Brussel, Belgium.
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CORROSION (2017) 73 (9): 1078–1090.
Article history
Received:
January 20 2017
Revision Received:
April 28 2017
Accepted:
April 28 2017
Citation
Oksana Klok, Konstantina Lambrinou, Serguei Gavrilov, Erich Stergar, Tom Van der Donck, Shuigen Huang, Bensu Tunca, Iris De Graeve; Influence of Plastic Deformation on Dissolution Corrosion of Type 316L Austenitic Stainless Steel in Static, Oxygen-Poor Liquid Lead-Bismuth Eutectic at 500°C. CORROSION 1 September 2017; 73 (9): 1078–1090. doi: https://doi.org/10.5006/2400
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