Evolution of cementite morphology in pearlitic steel wire during wet wire drawing

Xiaodan Zhang, Andrew Godfrey, Niels Hansen, Xiaoxu Huang, Wei Liu, Qing Liu

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The evolution of the cementite phase during wet wire drawing of a pearlitic steel wire has been followed as a function of strain. Particular attention has been given to a quantitative characterization of changes in the alignment and in the dimensions of the cementite phase. Scanning electron microscope observations show that cementite plates become increasingly aligned with the wire axis as the drawing strain is increased. Measurements in the transmission electron microscope show that the cementite deforms plastically during wire drawing , with the average thickness of the cementite plates decreasing from 19 nm (ε = 0) to 2 nm (ε = 3.7) in correspondence with the reduction in wire diameter. The deformation of the cementite is strongly related to plastic deformation in the ferrite, with coarse slip steps, shear bands and cracks in the cementite plates/particles observed parallel to either {110}α or {112}α slip plane traces in the ferrite.
    Original languageEnglish
    JournalMaterials Characterization
    Volume61
    Issue number1
    Pages (from-to)65-72
    ISSN1044-5803
    DOIs
    Publication statusPublished - 2010

    Keywords

    • Materials and energy storage
    • Light strong materials for energy purposes

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