Characterization of the Fe-Al Inhibition Layer Formed in the Initial Stages of Hot-dip Galvannealing

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著者

    • MORIMOTO Y.
    • Steel Research Laboratories, Technical Development Bureau, Nippon Steel Corporation
    • MCDEVITT E.
    • Department of Materials Science and Engineering, Robert R. McCormick School of Engineering and Applied Science, Northwestern University
    • MESHII M.
    • Department of Materials Science and Engineering, Robert R. McCormick School of Engineering and Applied Science, Northwestern University

抄録

Due to the lack of detailed information surrounding the inhibition phenomenon in hot-dip galvannealing, and the microstructure and morphology of the Fe-Al inhibition compounds, this study was initiated to investigate the inhibition layer formed under the low bath Al content, short-dipping-time conditions typical of commercial galvannealing. In this paper, Fe-Al inhibition layer formation on samples produced in a 0.14 mass% Al-bearing Zn bath on a Ti IF, Ti-Nb IF and a P-added Ti IF substrate was studied using a technique combining both SEM and TEM. The inhibition layer on the Ti IF and Ti-Nb IF substrates was composed of both Fe<sub>2</sub>Al<sub>5</sub> and FeAl<sub>3</sub>. The inhibition layer on the P-added substrate was composed primarily of FeAl<sub>3</sub> with individual grains of Fe<sub>2</sub>Al<sub>5</sub> observed between the FeAl<sub>3</sub> and the steel substrate. A possible formation mechanisms for the inhibition layer is speculated based upon the TEM observations of the morphology of the layer.

収録刊行物

  • ISIJ international

    ISIJ international 37(9), 906-913, 1997-09-15

    The Iron and Steel Institute of Japan

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  • Characterization of the Fe-Al Interfacial Layer in a Commercial Hot-dip Galvanized Coating

    MCDEVITT E. , MORIMOTO Y. , MESHII M.

    ISIJ international 37(8), 776-782, 1997-08-15

    J-STAGE DOI 参考文献24件 被引用文献4件

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