Abstract
Liquid metal embrittlement (LME) of an Fe10Cr4Al (wt%) ferritic alloy was tested in lead-bismuth eutectic (LBE) at 350 °C using slow strain rate tensile tests. The results show that this alloy is highly susceptible to LME. The strong LME effect is manifested by a substantial reduction in ductility and completely cleaved fracture surfaces. Transgranular cleavage and intergranular cracking are the major fracture modes. The LME susceptibility is slightly weaker in oxygen-saturated LBE than oxygen-depleted LBE due to the presence of a double-layer scale consisting of magnetite and Al-rich spinel. The oxide scale is fragmented, indicative of a brittle nature.
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