Dissolution corrosion of 316L austenitic stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C

Konstantina Lambrinou, Evangelia Charalampopoulou, Tom Van der Donck, Rémi Delville, Dominique Schryvers

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

This work addresses the dissolution corrosion behaviour of 316L austenitic stainless steels. For this purpose, solution-annealed and cold-deformed 316L steels were simultaneously exposed to oxygen-poor (<10−8 mass%) static liquid lead-bismuth eutectic (LBE) for 253–3282 h at 500 °C. Corrosion was consistently more severe for the cold-drawn steels than the solution-annealed steel, indicating the importance of the steel thermomechanical state. The thickness of the dissolution-affected zone was non-uniform, and sites of locally-enhanced dissolution were occasionally observed. The progress of LBE dissolution attack was promoted by the interplay of certain steel microstructural features (grain boundaries, deformation twin laths, precipitates) with the dissolution corrosion process. The identified dissolution mechanisms were selective leaching leading to steel ferritization, and non-selective leaching; the latter was mainly observed in the solution-annealed steel. The maximum corrosion rate decreased with exposure time and was found to be inversely proportional to the depth of dissolution attack.

LanguageEnglish
Pages9-27
Number of pages19
JournalJournal of Nuclear Materials
Volume490
Early online date10 Apr 2017
DOIs
Publication statusPublished - Jul 2017
Externally publishedYes

Fingerprint

austenitic stainless steels
Steel
Austenitic stainless steel
Bismuth
eutectics
Contacts (fluid mechanics)
Eutectics
bismuth
corrosion
dissolving
Dissolution
Lead
steels
Corrosion
Liquids
liquids
leaching
Leaching
attack
bismuth lead

Cite this

Lambrinou, Konstantina ; Charalampopoulou, Evangelia ; Van der Donck, Tom ; Delville, Rémi ; Schryvers, Dominique. / Dissolution corrosion of 316L austenitic stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C. In: Journal of Nuclear Materials. 2017 ; Vol. 490. pp. 9-27.
@article{371cea99fe2c48e4a6a955edf61cf7f2,
title = "Dissolution corrosion of 316L austenitic stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C",
abstract = "This work addresses the dissolution corrosion behaviour of 316L austenitic stainless steels. For this purpose, solution-annealed and cold-deformed 316L steels were simultaneously exposed to oxygen-poor (<10−8 mass{\%}) static liquid lead-bismuth eutectic (LBE) for 253–3282 h at 500 °C. Corrosion was consistently more severe for the cold-drawn steels than the solution-annealed steel, indicating the importance of the steel thermomechanical state. The thickness of the dissolution-affected zone was non-uniform, and sites of locally-enhanced dissolution were occasionally observed. The progress of LBE dissolution attack was promoted by the interplay of certain steel microstructural features (grain boundaries, deformation twin laths, precipitates) with the dissolution corrosion process. The identified dissolution mechanisms were selective leaching leading to steel ferritization, and non-selective leaching; the latter was mainly observed in the solution-annealed steel. The maximum corrosion rate decreased with exposure time and was found to be inversely proportional to the depth of dissolution attack.",
keywords = "De-alloying, Intergranular corrosion, Pitting corrosion, SEM, Stainless steel, TEM",
author = "Konstantina Lambrinou and Evangelia Charalampopoulou and {Van der Donck}, Tom and R{\'e}mi Delville and Dominique Schryvers",
year = "2017",
month = "7",
doi = "10.1016/j.jnucmat.2017.04.004",
language = "English",
volume = "490",
pages = "9--27",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

Dissolution corrosion of 316L austenitic stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C. / Lambrinou, Konstantina; Charalampopoulou, Evangelia; Van der Donck, Tom; Delville, Rémi; Schryvers, Dominique.

In: Journal of Nuclear Materials, Vol. 490, 07.2017, p. 9-27.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Dissolution corrosion of 316L austenitic stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C

AU - Lambrinou, Konstantina

AU - Charalampopoulou, Evangelia

AU - Van der Donck, Tom

AU - Delville, Rémi

AU - Schryvers, Dominique

PY - 2017/7

Y1 - 2017/7

N2 - This work addresses the dissolution corrosion behaviour of 316L austenitic stainless steels. For this purpose, solution-annealed and cold-deformed 316L steels were simultaneously exposed to oxygen-poor (<10−8 mass%) static liquid lead-bismuth eutectic (LBE) for 253–3282 h at 500 °C. Corrosion was consistently more severe for the cold-drawn steels than the solution-annealed steel, indicating the importance of the steel thermomechanical state. The thickness of the dissolution-affected zone was non-uniform, and sites of locally-enhanced dissolution were occasionally observed. The progress of LBE dissolution attack was promoted by the interplay of certain steel microstructural features (grain boundaries, deformation twin laths, precipitates) with the dissolution corrosion process. The identified dissolution mechanisms were selective leaching leading to steel ferritization, and non-selective leaching; the latter was mainly observed in the solution-annealed steel. The maximum corrosion rate decreased with exposure time and was found to be inversely proportional to the depth of dissolution attack.

AB - This work addresses the dissolution corrosion behaviour of 316L austenitic stainless steels. For this purpose, solution-annealed and cold-deformed 316L steels were simultaneously exposed to oxygen-poor (<10−8 mass%) static liquid lead-bismuth eutectic (LBE) for 253–3282 h at 500 °C. Corrosion was consistently more severe for the cold-drawn steels than the solution-annealed steel, indicating the importance of the steel thermomechanical state. The thickness of the dissolution-affected zone was non-uniform, and sites of locally-enhanced dissolution were occasionally observed. The progress of LBE dissolution attack was promoted by the interplay of certain steel microstructural features (grain boundaries, deformation twin laths, precipitates) with the dissolution corrosion process. The identified dissolution mechanisms were selective leaching leading to steel ferritization, and non-selective leaching; the latter was mainly observed in the solution-annealed steel. The maximum corrosion rate decreased with exposure time and was found to be inversely proportional to the depth of dissolution attack.

KW - De-alloying

KW - Intergranular corrosion

KW - Pitting corrosion

KW - SEM

KW - Stainless steel

KW - TEM

UR - http://www.scopus.com/inward/record.url?scp=85017469414&partnerID=8YFLogxK

UR - https://doi.org/10.1016/j.jnucmat.2017.04.025

U2 - 10.1016/j.jnucmat.2017.04.004

DO - 10.1016/j.jnucmat.2017.04.004

M3 - Article

VL - 490

SP - 9

EP - 27

JO - Journal of Nuclear Materials

T2 - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

ER -