Influence of temperature on the microstructural evolution of SIMP and T91 steels in liquid lead-bismuth eutectic: Experiments and molecular dynamics simulations

被引：15

作者：

Ma, Zhiwei ^{[1
,2
,3
]}

Zhou, Ting ^{[1
,2
]}

Jin, Peng ^{[1
,2
]}

Gao, Xing ^{[1
,2
]}

Liu, Chao ^{[1
,2
,3
]}

Chang, Hailong ^{[1
,2
,3
]}

Pang, Lilong ^{[1
,2
,3
]}

Shen, Tielong ^{[1
,2
,3
]}

Wang, Zhiguang ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China

[3] Adv Energy Sci & Technol Guangdong Lab, Huizhou 516000, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 222卷

基金：

中国国家自然科学基金;

关键词：

A. Ferritic/martensitic steels; B; TEM; B. Molecular dynamics simulations; C. Lead-bismuth eutectic; C; Corrosion; FERRITIC/MARTENSITIC STEELS; OXIDATION BEHAVIOR; DIFFUSION; CORROSION; SILICON; OXYGEN; ALLOY; IRON;

D O I：

10.1016/j.corsci.2023.111411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructural evolution of ferritic/martensitic steels SIMP and T91 in oxygen-saturated liquid LBE at different temperatures (400, 470, 550 and 620 degrees C) has been studied by experiments and molecular dynamics simulations. It is shown that the SIMP steel offers better oxidation resistance at 400-550 degrees C due to the formation of protective SiO2 particles and bands. At 620 degrees C, both the SIMP and T91 steels undergo dissolution corrosion with similar dissolved layer thicknesses. Molecular dynamics simulations reveal that the number of Fe-O pairs decreases with increasing temperatures and the enhanced dissolution of Fe makes the surfaces of the steel difficult to oxidize at 620 degrees C.

引用

页数：13

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