Effect of alloying elements on liquid metal embrittlement of pure BCC Fe in contact with liquid lead-bismuth eutectic: Experiments and first principles calculation

被引：19

作者：

Gong, Xing ^{[1
,2
]}

Sun, Lei ^{[3
]}

Zhang, Feifei ^{[4
]}

Yin, Yuan ^{[1
,2
]}

Huang, Xi ^{[1
,2
]}

Gong, Haoran ^{[3
]}

Liu, Yong ^{[1
,2
]}

机构：

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

[2] Shenzhen Univ, Inst Adv Study Nucl Energy & Safety, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China

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

[4] China Nucl Power Technol Res Inst Co Ltd, China Gen Nucl Power Corp CGN, Shenzhen 518026, Peoples R China

来源：

CORROSION SCIENCE | 2022年 / 208卷

基金：

中国国家自然科学基金;

关键词：

Liquid metal embrittlement (LME); Lead -bismuth eutectic (LBE); Iron; Crack; First principles calculation; GENERALIZED GRADIENT APPROXIMATION; FERRITIC-MARTENSITIC STEEL; TOTAL-ENERGY CALCULATIONS; CORROSION BEHAVIOR; FRACTURE-TOUGHNESS; STRAIN-RATE; T91; STEEL; TENSILE; SUSCEPTIBILITY; TEMPERATURE;

D O I：

10.1016/j.corsci.2022.110522

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of three alloying elements, i.e., Cr, Al, and Si, on liquid metal embrittlement (LME) of pure Fe (BCC) exposed to oxygen-poor liquid lead-bismuth eutectic (LBE) have been studied using tensile tests and first prin-ciples calculation. It is shown that all three elements induce an increase in strength while loss of ductility, and Si has the strongest effect. The LME enhancement sequence is Si>Al>Cr. First principles calculation reveals that the considerable decreases of surface energy and Young's moduli as well as more directional and localized bonding due to the alloying elements intrinsically cause the LME susceptibility of BCC Fe.

引用

页数：14

共 45 条

[1] Liquid metal embrittlement susceptibility of T91 steel by lead-bismuth [J].

Auger, T ;

Lorang, G .

SCRIPTA MATERIALIA, 2005, 52 (12) :1323-1328

[2]

Auger T., 2019, CONCEPTS EXPT MODEL, P507

[3] Corrosion behavior of steels in flowing lead-bismuth [J].

Barbier, F ;

Rusanov, A .

JOURNAL OF NUCLEAR MATERIALS, 2001, 296 :231-236

[4] Interfacial fracture toughness of transition metal nitrides [J].

Chen, Kuiying ;

Bielawski, Mariusz .

SURFACE & COATINGS TECHNOLOGY, 2008, 203 (5-7) :598-601

[5]

Coen G., 2014, FP7212175GETMAT SCKC

[6]

de Boer F. R., 1988, Cohesion in metals: transition metal alloys

[7] Influence of composition and microstructure on the corrosion behavior of different Fe-Cr-Al alloys in molten LBE [J].

Del Giacco, M. ;

Weisenburger, A. ;

Jianu, A. ;

Lang, F. ;

Mueller, G. .

JOURNAL OF NUCLEAR MATERIALS, 2012, 421 (1-3) :39-46

[8] Environmental degradation of structural materials in liquid lead-and lead-bismuth eutectic-cooled reactors [J].

Gong, Xing ;

Short, Michael P. ;

Auger, Thierry ;

Charalampopoulou, Evangelia ;

Lambrinou, Konstantina .

PROGRESS IN MATERIALS SCIENCE, 2022, 126

[9] A comparative study on liquid metal embrittlement susceptibility of three FeCrAl ferritic alloys in contact with liquid lead-bismuth eutectic at 350?C [J].

Gong, Xing ;

Chen, Jiajun ;

Xiang, Congying ;

Yu, Zhiyang ;

Gong, Haoran ;

Yin, Yuan .

CORROSION SCIENCE, 2021, 183

[10] Liquid metal embrittlement of an Fe10Cr4Al ferritic alloy exposed to oxygen-depleted and -saturated lead-bismuth eutectic at 350°C [J].

Gong, Xing ;

Chen, Jiajun ;

Hu, Feiyu ;

Xiang, Congying ;

Yu, Zhiyang ;

Xiao, Jun ;

Wang, Hui ;

Gong, Haoran ;

Wang, Hao ;

Liu, Chaohong ;

Deng, Yangbin ;

Pang, Bo ;

Huang, Xi ;

Li, Yongchun ;

Yin, Yuan .

CORROSION SCIENCE, 2020, 165

← 1 2 3 4 5 →