Effect of temperature on liquid metal embrittlement susceptibility of an Fe10Cr4Al ferritic alloy in contact with stagnant lead -bismuth eutectic

被引：15

作者：

Gong, Xing ^{[1
]}

Hu, Feiyu ^{[1
]}

Chen, Jiajun ^{[1
]}

Wang, Hui ^{[2
]}

Gong, Haoran ^{[3
]}

Xiao, Jun ^{[2
]}

Wang, Hao ^{[2
]}

Deng, Yangbin ^{[1
]}

Pang, Bo ^{[1
]}

Huang, Xi ^{[1
]}

Li, Yongchun ^{[1
]}

Yin, Yuan ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Adv Nucl Energy Res Team, Shenzhen 518060, Peoples R China

[2] Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu 610213, Peoples R China

[3] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

来源：

JOURNAL OF NUCLEAR MATERIALS | 2020年 / 537卷

基金：

中国国家自然科学基金;

关键词：

LOW-CYCLE FATIGUE; POTENTIOMETRIC OXYGEN SENSORS; 550; DEGREES-C; DISSOLUTION CORROSION; AUSTENITIC STEELS; STRAIN-RATE; MICROSTRUCTURAL STABILITY; ELECTRON-MICROSCOPY; MARTENSITIC STEEL; STAINLESS-STEELS;

D O I：

10.1016/j.jnucmat.2020.152196

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of temperature on the liquid metal embrittlement (LME) susceptibility of an Fe10Cr4Al ferritic alloy exposed to stagnant oxygen-depleted lead-bismuth eutectic (LBE) was investigated using slow strain rate tensile (SSRT) tests. The results show that the total elongation to rupture of the specimens tested in LBE decreases with increasing temperature from 150 to 350 °C, while an upward trend is observed in the temperature range of 350–500 °C. Such a strong temperature dependence is called a “ductility trough”. This phenomenon is not observed in the specimens tested in Ar reference environment. Fractographic examinations reveal that LME occurs at 150 up to 450 °C and ductility fully recovers only at 500 °C. In addition, transgranular cleavage and intergranular cracking are the major fracture modes on the fracture surfaces affected by LME. © 2020 Elsevier B.V.

引用

页数：11

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