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Powder eutectic coating with Al3Ti for steels

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Abstract

Plates and round bars made of a pure iron or a carbon steel (JIS-S45C) have successfully been coated with Al3Ti powder by the “powder eutectic coating” method. The coated layers are found to show graded microstructures, where the concentrations of Fe, Al, and Ti change gradually from the surface toward the inside of a specimen. The microstructure of the coated layer consists of Al3Ti, τ3 (Al22Fe3Ti8), τ2 (Al2FeTi), and B2 (FeAl). When the coated specimens were subjected to heat-cycling tests between 293 and 973 K, they showed no cracking, no peeling, little oxidation, and no significant changes in microstructure.

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Author notes

  1. H. Kafuku (Graduate Student, Engineer) & M. Isaka (Graduate student, Engineer)

    Present address: Department of Science and Engineering, Ibaraki University, Japan

Authors and Affiliations

  1. Mitsubishi Heavy Industries Ltd., 2-1-1 Arai, Shinhama, 676-8686, Takasago, Japan

    H. Kafuku (Graduate Student, Engineer)

  2. the Department of Materials Science, Faculty of Engineering, Ibaraki University, 4-12-1 Nakanarusawa Hitachi, 316-8511, Ibaraki, Japan

    Y. Tomota (Professor) & T. Suzuki (Associate Professor)

  3. Hitachi Tool Engineering, Ltd., 13-2 Shinizumi, 286-0825, Narita, Japan

    M. Isaka (Graduate student, Engineer)

Authors
  1. H. Kafuku
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  2. Y. Tomota
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  3. T. Suzuki
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  4. M. Isaka
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Kafuku, H., Tomota, Y., Suzuki, T. et al. Powder eutectic coating with Al3Ti for steels. Metall Mater Trans A 33, 3235–3240 (2002). https://doi.org/10.1007/s11661-002-0309-9

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  • DOI: https://doi.org/10.1007/s11661-002-0309-9

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