Effect of deformation twinning on dissolution corrosion of 316L stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C

Oksana Klok, Konstantina Lambrinou, Serguei Gavrilov, Erich Stergar, Jun Lim, Tom Van der Donck, Wouter Van Renterghem, Iris De Graeve

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This work addresses the effect of deformation twinning on the dissolution corrosion behaviour of 316 L austenitic stainless steels in contact with static liquid lead-bismuth eutectic (LBE). For this purpose, plastically deformed 316 L steel specimens with distinctly different deformation twin densities were simultaneously exposed to oxygen-poor (<10−13 mass%) static liquid LBE for 1000 h at 500 °C. The variation in deformation twin density was achieved by loading in uniaxial tension to similar degrees of plastic deformation (8–10%) specimens made of the same 316 L steel heat. Tensile loading was carried out at −150, 25 and 150 °C so as to affect the twin density, which increased as the temperature of plastic deformation decreased. Dissolution corrosion was the only liquid metal corrosion mechanism observed in the LBE-exposed steel specimens. The thickness of the dissolution-affected zone increased with the deformation twin density, which was highest in the 316 L steel specimen deformed at −150 °C and lowest in the one deformed at 150 °C. As deformation twin boundaries accelerated the LBE ingress into the steel bulk, their local orientation with respect to the steel specimen surface affected the thickness of the dissolution-affected zone.

Original languageEnglish
Pages (from-to)556-567
Number of pages12
JournalJournal of Nuclear Materials
Volume510
Early online date18 Aug 2018
DOIs
Publication statusPublished - Nov 2018
Externally publishedYes

Fingerprint

Steel
Stainless Steel
Twinning
twinning
Bismuth
eutectics
Contacts (fluid mechanics)
Eutectics
bismuth
stainless steels
corrosion
dissolving
Dissolution
Stainless steel
Lead
steels
Corrosion
Liquids
liquids
plastic deformation

Cite this

Klok, Oksana ; Lambrinou, Konstantina ; Gavrilov, Serguei ; Stergar, Erich ; Lim, Jun ; Van der Donck, Tom ; Van Renterghem, Wouter ; De Graeve, Iris. / Effect of deformation twinning on dissolution corrosion of 316L stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C. In: Journal of Nuclear Materials. 2018 ; Vol. 510. pp. 556-567.
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abstract = "This work addresses the effect of deformation twinning on the dissolution corrosion behaviour of 316 L austenitic stainless steels in contact with static liquid lead-bismuth eutectic (LBE). For this purpose, plastically deformed 316 L steel specimens with distinctly different deformation twin densities were simultaneously exposed to oxygen-poor (<10−13 mass{\%}) static liquid LBE for 1000 h at 500 °C. The variation in deformation twin density was achieved by loading in uniaxial tension to similar degrees of plastic deformation (8–10{\%}) specimens made of the same 316 L steel heat. Tensile loading was carried out at −150, 25 and 150 °C so as to affect the twin density, which increased as the temperature of plastic deformation decreased. Dissolution corrosion was the only liquid metal corrosion mechanism observed in the LBE-exposed steel specimens. The thickness of the dissolution-affected zone increased with the deformation twin density, which was highest in the 316 L steel specimen deformed at −150 °C and lowest in the one deformed at 150 °C. As deformation twin boundaries accelerated the LBE ingress into the steel bulk, their local orientation with respect to the steel specimen surface affected the thickness of the dissolution-affected zone.",
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Effect of deformation twinning on dissolution corrosion of 316L stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C. / Klok, Oksana; Lambrinou, Konstantina; Gavrilov, Serguei; Stergar, Erich; Lim, Jun; Van der Donck, Tom; Van Renterghem, Wouter; De Graeve, Iris.

In: Journal of Nuclear Materials, Vol. 510, 11.2018, p. 556-567.

Research output: Contribution to journalArticle

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AU - De Graeve, Iris

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