Oxidation and tensile behavior of ferritic/martensitic steels after exposure to lead-bismuth eutectic

Jian Liu, Quanqiang Shi, He Luan, Wei Yan, Wei Sha, Wei Wang, Yiyin Shan, Ke Yang

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    Abstract


    Two ferritic/martensitic steels, T91 steel and newly developed SIMP steel, were subject to tensile test after being oxidized in the liquid lead-bismuth eutectic (LBE) at 873 K for 500 h, 1000 h and 2000 h. Tensile tests were also carried out on the steels only thermally aged at 873 K. The result shows that thermal aging has no effect. Exposure to LBE at 873 K leads to a slight decrease in strength, but a large decrease in elongation when tested at 873 K. When tested at 873 K after 2000 h exposure, the tensile strength of T91 decreases slightly, and elongation from 39% to 21%. For SIMP, the decreases are slightly and from 44% to 28%, for tensile strength and elongation, respectively. The room temperature strength has slightly larger percentage reductions after the LBE exposure, but the elongation changes little.
    Original languageEnglish
    Pages (from-to)97-105
    Number of pages9
    JournalMaterials Science and Engineering: A
    Volume670
    Early online date25 May 2016
    DOIs
    Publication statusPublished - 18 Jul 2016

    Keywords

    • Electron microscopy
    • Light microscopy
    • Steel
    • Oxidation
    • Mechanical characterization
    • Fracture

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