Influence of a lead melt on plastic deformation of high-alloyed heat-resistant steels

Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors

“…A similar "ductility trough" was also observed in Si-enriched ferritic steels [251,501]. This also bears similarity with the findings of Abramov et al regarding an Fe-12Cr-Mo ferritic steel in contact with liquid Pb [360]. T91 F/M steels with a higher strength obtained by steel tempering at relatively low temperatures were more susceptible to LME.…”

“…The tempering heat treatment also aimed at simulating the mechanical hardening induced by the low-temperature (<400 • C) irradiation of Fe-9Cr alloys. LME was then observed in notched specimens with this metallurgical condition, thereby reproducing the findings by Abramov et al in an Fe-13Cr alloy [360]. More importantly, steel specimens subjected to a normal (750 • C) tempering heat treatment did not exhibit LME; it should be noted that this statement is generally true for monotonic tensile tests, but LME can also occur during small punch tests (SPT) under very low strain rates, as will be described in Section 4.6.2.…”

“…The LME case of high-alloy steels (F/M type) was first investigated by Abramov et al in 1992, under torsion testing of ferritic Fe-12Cr-Mo steels in liquid Pb [360]. A limited degradation of mechanical properties was observed on tempered steels in the 400-500 • C range.…”