Liquid metal embrittlement of an Fe10Cr4Al ferritic alloy exposed to oxygen-depleted and -saturated lead-bismuth eutectic at 350°C
Liquid metal embrittlement of an Fe10Cr4Al ferritic alloy exposed to oxygen-depleted and -saturated lead-bismuth eutectic at 350°C
复制标题
Fe10Cr4Al铁素体合金在350℃贫氧饱和铅铋共晶中的液态金属脆化
DOI：
10.1016/j.corsci.2019.108364
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发表时间：
2020-04-01
影响因子：
8.3
通讯作者：
Yin, Yuan
中科院分区：
文献类型：
--
作者：
Gong, Xing;Chen, Jiajun;Yin, Yuan
采用慢应变速率拉伸试验，在铅铋共晶（LBE）中测试了Fe10Cr4Al （wt%）铁素体合金在350℃下的液态金属脆化（LME）。结果表明，该合金对LME非常敏感。强LME效应表现为延展性的大幅降低和断口表面完全劈裂。穿晶解理和沿晶开裂是主要的断裂方式。氧饱和LBE的LME敏感性略弱于贫氧LBE，这是由于由磁铁矿和富铝脊组成的双层垢的存在。氧化层呈碎片状，表明其易碎性。
Liquid metal embrittlement (LME) of an Fe10Cr4Al (wt%) ferritic alloy was tested in lead-bismuth eutectic (LBE) at 350 degrees 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 spinal. The oxide scale is fragmented, indicative of a brittle nature.