Twin boundary-accelerated ferritization of austenitic stainless steels in liquid lead-bismuth eutectic

P. Hosemann, D. Frazer, E. Stergar, K. Lambrinou

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Exposure of austenitic stainless steels to liquid lead-bismuth eutectic with low concentration of dissolved oxygen typically results in selective leaching of highly-soluble alloying elements and ferritization of the dissolution-affected zone. In this work, focused ion beam, transmission electron backscatter diffraction and scanning transmission electron microscopy were utilized to elucidate early-stage aspects of the dissolution corrosion process of cold-worked austenitic stainless steels exposed to static, oxygen-poor liquid lead-bismuth eutectic at 450 °C for 1000 h. It was found that deformation-induced twin boundaries in the cold-worked steel bulk provide paths of accelerated penetration of the liquid metal into the steel bulk.

LanguageEnglish
Pages37-40
Number of pages4
JournalScripta Materialia
Volume118
Early online date24 Mar 2016
DOIs
Publication statusPublished - Jun 2016
Externally publishedYes

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austenitic stainless steels
Steel
Austenitic stainless steel
Bismuth
eutectics
Eutectics
bismuth
dissolving
Dissolution
Lead
steels
liquid oxygen
Focused ion beams
Liquids
leaching
Alloying elements
Dissolved oxygen
liquids
liquid metals
Liquid metals

Cite this

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Twin boundary-accelerated ferritization of austenitic stainless steels in liquid lead-bismuth eutectic. / Hosemann, P.; Frazer, D.; Stergar, E.; Lambrinou, K.

In: Scripta Materialia, Vol. 118, 06.2016, p. 37-40.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Twin boundary-accelerated ferritization of austenitic stainless steels in liquid lead-bismuth eutectic

AU - Hosemann, P.

AU - Frazer, D.

AU - Stergar, E.

AU - Lambrinou, K.

PY - 2016/6

Y1 - 2016/6

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KW - Electron backscattering diffraction (EBSD)

KW - Focused ion beam (FIB)

KW - Liquid metal corrosion (LMC)

KW - Scanning/transmission electron microscopy (STEM)

KW - Steels

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T2 - Scripta Materialia

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