Microstructural characteristics of the internal oxidation zone of ferritic/ martensitic steel exposed to LBE at 550°C for 1000 h

被引:0
|
作者
Wang, Hao [1 ]
Zhang, Fujian [2 ]
Xiao, Jun [1 ]
Chai, Linjiang [3 ]
Xu, Qi [1 ]
Yin, Xin [1 ]
Zhao, Ke [1 ]
Guo, Ning [2 ]
Yao, Zhongwen [4 ]
Qiu, Shaoyu [1 ]
机构
[1] Nucl Power Inst China, State Key Lab Adv Nucl Energy Technol, Chengdu 610213, Peoples R China
[2] Southwest Univ, Sch Mat & Energy, Chongqing 400715, Peoples R China
[3] Chongqing Univ Technol, Coll Mat Sci & Engn, Chongqing 400054, Peoples R China
[4] Queens Univ, Dept Mech & Mat Engn, Kingston, ON K7L4M9, Canada
关键词
F/M steel; Lead-bismuth eutectic; Internal oxidation zone; Oxidation; FERRITIC/MARTENSITIC STEELS; CORROSION BEHAVIOR; DEGREES-C; LEAD; OXYGEN; MECHANISMS;
D O I
10.1016/j.jmrt.2024.10.062
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The oxidation products formed on ferritic/martensitic (F/M) steel exposed to oxygen-saturated lead-bismuth eutectic (LBE) at 550 degrees C for 1000 h were investigated using various characterizations. The results indicate that the corrosion products consist of three distinct layers from the inside to the outside: the inner oxidation zone (IOZ), a middle oxide layer, and the growth front facing LBE. In the IOZ, although O has penetrated the entire oxidation layer, the martensite laths and ferrite grains remain visible. However, significant segregation of Cr and O along the laths and grain boundaries has occurred, resulting in the formation of strip-shaped Cr2O3 particles. In the matrix adjacent to the IOZ, Cr atoms have segregated at the grain boundaries and martensite laths, forming Cr-rich regions, while O atoms have not yet infiltrated. During the growth of Fe3O4 grains, the priority formed strip-shaped Cr2O3 particles are pushed toward the corrosion front until they detach from the F/M steel and disperse into the LBE, resulting in nearly pure Fe3O4 grains in the middle layer. The gradient three-layer structure of the oxidation product is closely associated with the segregation of Cr and the gradient distribution of oxygen partial pressure (PO2).
引用
收藏
页码:3649 / 3658
页数:10
相关论文
共 50 条
  • [1] Oxidation behavior of ferritic/martensitic steels in stagnant liquid LBE saturated by oxygen at 600 °C
    Shi, Quanqiang
    Liu, Jian
    Luan, He
    Yang, Zhenguo
    Wang, Wei
    Yan, Wei
    Shan, Yiyin
    Yang, Ke
    JOURNAL OF NUCLEAR MATERIALS, 2015, 457 : 135 - 141
  • [2] COMPATIBILITY OF FERRITIC/MARTENSITIC STEEL T91 WITH FLOWING LBE CONTAINING 10-7 MASS% DISSOLVED OXYGEN AT 450 AND 550 °C
    Tsisar, Valentyn
    Schroer, Carsten
    Wedemeyer, Olaf
    Skrypnik, Aleksandr
    Konys, Juergen
    PROCEEDINGS OF THE 22ND INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING - 2014, VOL 3, 2014,
  • [3] Microstructure Stability and Mechanical Properties of Reduced Activated Ferritic Martensitic Steel during Thermal Aging at 550 °C for 5000 h
    Qi Min
    Qiu Guo-xing
    Cai Ming-chong
    Du Qing
    Cao Lei
    Wu Hong-yan
    Journal of Materials Engineering and Performance, 2023, 32 : 5410 - 5420
  • [4] Microstructure Stability and Mechanical Properties of Reduced Activated Ferritic Martensitic Steel during Thermal Aging at 550 °C for 5000 h
    Qi Min
    Qiu Guo-xing
    Cai Ming-thong
    Du Qing
    Cao Lei
    Wu Hong-yan
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2023, 32 (12) : 5410 - 5420
  • [5] Synergy of stress and corrosion in a 12Cr ferritic/martensitic steel exposed to static liquid lead-bismuth eutectic at 550 °C
    Xiao, Jun
    Zhong, Zhihuai
    Wen, Tao
    Yu, Xiufu
    Wang, Hao
    Zhao, Ke
    Liu, Chaohong
    Zhuo, Hong
    Qiu, Shaoyu
    Liu, Guoqing
    Li, Yongchun
    Gong, Xing
    CORROSION SCIENCE, 2023, 222
  • [6] Oxidation of steel T91 in flowing lead-bismuth eutectic (LBE) at 550°C
    Schroer, C.
    Voss, Z.
    Wedemeyer, O.
    Novotny, J.
    Konys, J.
    JOURNAL OF NUCLEAR MATERIALS, 2006, 356 (1-3) : 189 - 197
  • [7] Influence of CO2 purity on the oxidation of a 12Cr ferritic-martensitic steel at 550°C and importance of the initial stage
    Bouhieda, Soraya
    Rouillard, Fabien
    Wolski, Krzysztof
    MATERIALS AT HIGH TEMPERATURES, 2012, 29 (02) : 151 - 158
  • [8] High temperature oxidation behavior of ferritic steel in supercritical water at 550-700°C
    Li, Hongyuan
    Cao, Qiong
    Zhu, Zhongliang
    MATERIALS AT HIGH TEMPERATURES, 2019, 36 (02) : 111 - 116
  • [9] Water Vapour Effect on Ferritic 4509 Steel Oxidation Between 800 and 1000 °C
    Issartel, C.
    Buscail, H.
    Wang, Y.
    Rolland, R.
    Vilasi, M.
    Aranda, L.
    OXIDATION OF METALS, 2011, 76 (3-4): : 127 - 147
  • [10] Water Vapour Effect on Ferritic 4509 Steel Oxidation Between 800 and 1000 °C
    C. Issartel
    H. Buscail
    Y. Wang
    R. Rolland
    M. Vilasi
    L. Aranda
    Oxidation of Metals, 2011, 76 : 127 - 147