A comparative study on liquid metal embrittlement susceptibility of three FeCrAl ferritic alloys in contact with liquid lead-bismuth eutectic at 350°C

A comparative study on liquid metal embrittlement susceptibility of three FeCrAl ferritic alloys in contact with liquid lead-bismuth eutectic at 350°C
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3种FeCrAl铁素体合金350℃液态铅铋共晶接触液态金属脆化敏感性对比研究

DOI:
10.1016/j.corsci.2021.109346
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发表时间:
2021-02
期刊:
影响因子:
8.3
通讯作者:
Yuan Yin
Yuan Yin
中科院分区:
材料科学1区
文献类型:
--
作者:
Xing Gong;Jiajun Chen;Congying Xiang;Zhiyang Yu;Haoran Gong;Yuan Yin

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研究了三种FeCrAl合金(即,Fe10Cr4Al、Fe15Cr4Al和Fe10Cr6Al,重量%)在350 °C下使用慢应变速率拉伸试验在氧饱和和贫氧的液体铅铋共晶(LBE)中进行测试。结果表明,所有三种合金都非常容易受到LME的影响,表现为断裂总伸长率的严重降低和断裂表面上的普遍解理。由于表面氧化物的去湿效应,在氧饱和的LBE中LME被延迟。在三种合金中,Fe10Cr6Al最容易受到LME的影响,特别是在贫氧LBE存在下。
Liquid metal embrittlement (LME) susceptibility of three FeCrAl alloys (i.e., Fe10Cr4Al, Fe15Cr4Al and Fe10Cr6Al, wt%) was tested in oxygen-saturated and -depleted liquid lead-bismuth eutectic (LBE) at 350 °C using slow strain rate tensile tests. The results show that all three alloys are very susceptible to LME, manifested by a severe reduction in total elongation to failure and prevailing cleavage on fracture surfaces. LME is delayed in oxygen-saturated LBE, due to a dewetting effect of surface oxides. In three alloys, Fe10Cr6Al is most susceptible to LME, especially in presence of oxygen-depleted LBE.
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