TY - JOUR
T1 - Compatibility of martensitic/austenitic steel welds with liquid lead bismuth eutectic environment
AU - Van den Bosch, Joris
AU - Al Mazouzi, Abderrahim
N1 - Score = 10
PY - 2009/3
Y1 - 2009/3
N2 - The high-chromium ferritic/martensitic steel T91 and the austenitic stainless steel 316L are to be used in
contact with liquid lead–bismuth eutectic (LBE), under high irradiation doses. Both tungsten inert gas
(TIG) and electron beam (EB) T91/316L welds have been examined by means of metallography, scanning
electron microscopy (SEM-EDX), Vickers hardness measurements and tensile testing both in inert gas and
in LBE. Although the T91/316L TIG weld has very good mechanical properties when tested in air, its properties
decline sharply when tested in LBE. This degradation in mechanical properties is attributed to the
liquid metal embrittlement of the 309 buttering used in TIG welding of T91/316L welds. In contrast to
mixed T91/316L TIG welding, the mixed T91/316L EB weld was performed without buttering. The
mechanical behaviour of the T91/316L EB weld was very good in air after post weld heat treatment
but deteriorated when tested in LBE.
AB - The high-chromium ferritic/martensitic steel T91 and the austenitic stainless steel 316L are to be used in
contact with liquid lead–bismuth eutectic (LBE), under high irradiation doses. Both tungsten inert gas
(TIG) and electron beam (EB) T91/316L welds have been examined by means of metallography, scanning
electron microscopy (SEM-EDX), Vickers hardness measurements and tensile testing both in inert gas and
in LBE. Although the T91/316L TIG weld has very good mechanical properties when tested in air, its properties
decline sharply when tested in LBE. This degradation in mechanical properties is attributed to the
liquid metal embrittlement of the 309 buttering used in TIG welding of T91/316L welds. In contrast to
mixed T91/316L TIG welding, the mixed T91/316L EB weld was performed without buttering. The
mechanical behaviour of the T91/316L EB weld was very good in air after post weld heat treatment
but deteriorated when tested in LBE.
KW - lead-bismuth eutectic
KW - T91
KW - 316L
KW - Liquid metal embrittlement
KW - weld
KW - TIG
KW - EB
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_99737
UR - http://knowledgecentre.sckcen.be/so2/bibref/6016
U2 - 10.1016/j.nucmat.2008.12.043
DO - 10.1016/j.nucmat.2008.12.043
M3 - Article
SN - 0022-3115
VL - 385
SP - 504
EP - 509
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 3
ER -