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Enhanced toughness and ductility of T91 steel after exposure to liquid LBE saturated by oxygen at 350-500 °C

ZHIKUN ZHOU, Chenwen Tian, Wenbo Dong, Juan Du, Yunpeng Liu, Magd Abdel Wahab (UGent) and Ziguang Chen
(2024) JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T. 30. p.5455-5464
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Abstract
The mechanical tensile properties of T91 steel after being oxidized in liquid LBE saturated by oxygen at 350-500 degrees C for up to 1000 h are studied. Duplex oxide scales are found on T91 steels after the LBE exposure, and the thickness evolution is revealed. Oxidized T91 steels with surface oxide scale yield enhanced toughness and ductility, which is mainly attributed to the inner oxide layer. We show that the enhancing effect relies on the presence of the oxide scale, not its thickness. The possible enhancing effect of the oxide scale on the toughness of T91 steel by impeding the dislocation from emitting out of the steel surfaces is discussed and qualitatively verified by micro-scale elastoplastic simulations based on a newly proposed discrete dislocation dynamics and peridynamics superposition scheme.
Keywords
LBE, Oxide scale, Tensile, Toughness, Ductility, Modeling, BI EUTECTIC ALLOY, STRAIN-RATE, PB-BI, FERRITIC/MARTENSITIC STEELS, OXIDATION MECHANISM, FE-9CR-1MO STEEL, TEMPERATURE, BEHAVIOR, FRACTURE, EMBRITTLEMENT

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MLA
ZHOU, ZHIKUN, et al. “Enhanced Toughness and Ductility of T91 Steel after Exposure to Liquid LBE Saturated by Oxygen at 350-500 °C.” JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, vol. 30, 2024, pp. 5455–64, doi:10.1016/j.jmrt.2024.04.230.
APA
ZHOU, Z., Tian, C., Dong, W., Du, J., Liu, Y., Abdel Wahab, M., & Chen, Z. (2024). Enhanced toughness and ductility of T91 steel after exposure to liquid LBE saturated by oxygen at 350-500 °C. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 30, 5455–5464. https://doi.org/10.1016/j.jmrt.2024.04.230
Chicago author-date
ZHOU, ZHIKUN, Chenwen Tian, Wenbo Dong, Juan Du, Yunpeng Liu, Magd Abdel Wahab, and Ziguang Chen. 2024. “Enhanced Toughness and Ductility of T91 Steel after Exposure to Liquid LBE Saturated by Oxygen at 350-500 °C.” JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30: 5455–64. https://doi.org/10.1016/j.jmrt.2024.04.230.
Chicago author-date (all authors)
ZHOU, ZHIKUN, Chenwen Tian, Wenbo Dong, Juan Du, Yunpeng Liu, Magd Abdel Wahab, and Ziguang Chen. 2024. “Enhanced Toughness and Ductility of T91 Steel after Exposure to Liquid LBE Saturated by Oxygen at 350-500 °C.” JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30: 5455–5464. doi:10.1016/j.jmrt.2024.04.230.
Vancouver
1.
ZHOU Z, Tian C, Dong W, Du J, Liu Y, Abdel Wahab M, et al. Enhanced toughness and ductility of T91 steel after exposure to liquid LBE saturated by oxygen at 350-500 °C. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T. 2024;30:5455–64.
IEEE
[1]
Z. ZHOU et al., “Enhanced toughness and ductility of T91 steel after exposure to liquid LBE saturated by oxygen at 350-500 °C,” JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, vol. 30, pp. 5455–5464, 2024.
@article{01HX1HBRXG0EW7168Y1TDDZ4XF,
  abstract     = {{The mechanical tensile properties of T91 steel after being oxidized in liquid LBE saturated by oxygen at 350-500 degrees C for up to 1000 h are studied. Duplex oxide scales are found on T91 steels after the LBE exposure, and the thickness evolution is revealed. Oxidized T91 steels with surface oxide scale yield enhanced toughness and ductility, which is mainly attributed to the inner oxide layer. We show that the enhancing effect relies on the presence of the oxide scale, not its thickness. The possible enhancing effect of the oxide scale on the toughness of T91 steel by impeding the dislocation from emitting out of the steel surfaces is discussed and qualitatively verified by micro-scale elastoplastic simulations based on a newly proposed discrete dislocation dynamics and peridynamics superposition scheme.}},
  author       = {{ZHOU, ZHIKUN and Tian, Chenwen and Dong, Wenbo and Du, Juan and Liu, Yunpeng and Abdel Wahab, Magd and Chen, Ziguang}},
  issn         = {{2238-7854}},
  journal      = {{JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T}},
  keywords     = {{LBE,Oxide scale,Tensile,Toughness,Ductility,Modeling,BI EUTECTIC ALLOY,STRAIN-RATE,PB-BI,FERRITIC/MARTENSITIC STEELS,OXIDATION MECHANISM,FE-9CR-1MO STEEL,TEMPERATURE,BEHAVIOR,FRACTURE,EMBRITTLEMENT}},
  language     = {{eng}},
  pages        = {{5455--5464}},
  title        = {{Enhanced toughness and ductility of T91 steel after exposure to liquid LBE saturated by oxygen at 350-500 °C}},
  url          = {{http://doi.org/10.1016/j.jmrt.2024.04.230}},
  volume       = {{30}},
  year         = {{2024}},
}
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