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The structure and deformation behavior of zinc-rich coatings on steel sheet

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Abstract

The deformation behavior of commercially produced hot-dipped zinc and zinc-alloy coatings on steel under simple uniaxial tension has been studied. The strong basal plane texture of the hot-dipped galvanized coatings was found to be unfavorable for plastic flow and accounted for the extensive cracking observed during deformation. The eutectic structure in Galfan coatings was found to be beneficial in suppressing the formation of microcracks at low strain levels, although when grain boundary dents were present, cracks formed easily at these locations. Microcracks were observed in Galvalume coatings at all levels of strain. A technique to measure the coating plasticity has been developed to quantify the level of cracking in coatings at varying degrees of deformation.

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Authors and Affiliations

  1. Bartlett Engineering, 70002, Metairie, LA, USA

    S.R Shah

  2. University of Ghent, Ghent, Belgium

    J.A Dilewijns

  3. North East Wales Institute, Wales, UK

    R.D Jones

Authors
  1. S.R Shah
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  2. J.A Dilewijns
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  3. R.D Jones
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Shah, S., Dilewijns, J. & Jones, R. The structure and deformation behavior of zinc-rich coatings on steel sheet. JMEP 5, 601–608 (1996). https://doi.org/10.1007/BF02646089

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  • DOI: https://doi.org/10.1007/BF02646089

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