Early stages of dissolution corrosion in 316L and DIN 1.4970 austenitic stainless steels with and without anticorrosion coatings in static liquid lead-bismuth eutectic (LBE) at 500 degrees CShow others and affiliations
2021 (English)In: Materials Characterization, ISSN 1044-5803, E-ISSN 1873-4189, Vol. 178, article id 111234Article in journal (Refereed) Published
Abstract [en]
This work addresses the early stages (<= 1000 h) of the dissolution corrosion behavior of 316L and DIN 1.4970 austenitic stainless steels in contact with oxygen-poor (C-O < 10(-8) mass%), static liquid lead-bismuth eutectic (LBE) at 500 degrees C for 600-1000 h. The objective of this study was to determine the relative early-stage resistance of the uncoated steels to dissolution corrosion and to assess the protectiveness of select candidate coatings (Cr2AlC, Al2O3, V2AlxCy). The simultaneous exposure of steels with intended differences in microstructure and thermomechanical state showed the effects of steel grain size, density of annealing/deformation twins, and secondary precipitates on the steel dissolution corrosion behavior. The findings of this study provide recommendations on steel manufacturing with the aim of using the steels to construct Gen-IV lead-cooled fast reactors.
Place, publisher, year, edition, pages
ELSEVIER SCIENCE INC , 2021. Vol. 178, article id 111234
Keywords [en]
Liquid metal corrosion; Dissolution corrosion; Lead-bismuth eutectic (LBE); Austenitic stainless steels; Anticorrosion coatings
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:liu:diva-183080DOI: 10.1016/j.matchar.2021.111234ISI: 000752582700001OAI: oai:DiVA.org:liu-183080DiVA, id: diva2:1640370
Note
Funding Agencies|Euratom research and training programme 2014-2018 [740415, 755269]
2022-02-242022-02-242022-03-17