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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/025/07/0635-0639

    • Keywords

       

      Surface alloying; iron aluminides; electron diffraction; X-ray diffraction (XRD).

    • Abstract

       

      The fine structure in the Fe–Al alloy layer of a new hot dip aluminized steel (HDA) was examined by means of X-ray diffractometry (XRD), electron diffraction technique, etc. The test results indicated that the Fe–Al alloy layer of the new aluminized steel mainly composed of Fe3Al, FeAl and 𝛼-Fe (Al) solid solution. There was no brittle phase containing higher aluminum content, such as FeAl3 (59.18% Al) and Fe2Al7 (62.93% Al). The tiny cracks and embrittlement, formerly caused by these brittle phases in the conventional aluminum-coated steel, were effectively eliminated. There was no microscopic defect (such as tiny cracks, pores or loose layer) in the coating. This is favourable to resist high temperature oxidation and corrosion of the aluminized steel.

    • Author Affiliations

       

      Li Yajiang1 2 Wang Juan2 Zhang Yonglan2 X Holly3

      1. National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, PR China
      2. Key Lab of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, PR China
      3. Computer Engineering Department, University of Northern Virginia, VA 20147, USA
    • Dates

       
  • Bulletin of Materials Science | News

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