TY - JOUR
T1 - Effect of deformation twinning on dissolution corrosion of 316L stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 C
AU - Lambrinou, Konstantza
AU - Gavrilov, Serguei
AU - Stergar, Erich
AU - Van Renterghem, Wouter
AU - Lim, Jun
AU - Klok, Oksana
AU - Van der Donck, Tom
AU - De Graeve, Iris
A2 - Terentyev, Dmitry
N1 - Score=10
PY - 2018/8/18
Y1 - 2018/8/18
N2 - 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 (8e10%) 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.
AB - 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 (8e10%) 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.
KW - Stainless steel
KW - Plastic deformation
KW - Twinning
KW - De-alloying
KW - Liquid metal corrosion
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/31462353
U2 - 10.1016/j.jnucmat.2018.08.030
DO - 10.1016/j.jnucmat.2018.08.030
M3 - Article
SN - 0022-3115
VL - 510
SP - 556
EP - 567
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
ER -