Effect of Cooling Rate on Solidification Structure of Zinc–Aluminum–Magnesium Alloy

Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

Zinc–Aluminum–Magnesium coating are paid more attention recently due to the appearance of the surface and superior corrosion resistance. The research on the solidification structure of Zinc–Aluminum–Magnesium alloy is less. In this paper, the solidification structure of Zinc–Aluminum–Magnesium alloy with different zinc content and aluminum content under water cooling, air cooling and furnace cooling conditions was studied. The industrial pure Zinc (99.99 wt%), industrial pure Aluminum (99.99 wt%), Magnesium and Zinc alloy (Mg11Zn) were selected for smelting in resistance furnace. The molten alloy components were Z3A3M (3 wt% Al, 3 wt% Mg), Z5A3M (5 wt% Al, 3 wt% Mg). The solidification structure of the alloy was observed by scanning electron microscopy. The composition of the phase was analyzed by X-ray Diffraction (XRD). The corrosion property of the alloy was analyzed by electrochemical experiment. It was found that four phases existed in these two alloys: Zn phase, Al phase, AlMg4Zn11 phase and Mg2Zn11 phase in different cooling modes. And in air-cooled conditions, the two alloys showed a good corrosion resistance.

Keywords

Zn–Al–Mg Electrochemical test Corrosion resistance 

References

  1. 1.
    S. Schuerz, M. Fleischanderl, Corrosion behavior of Zn–Al–Mg coated steel sheet in sodium chloride-containing environment. J. Corros. Sci. 59, 2355–2363 (2009)CrossRefGoogle Scholar
  2. 2.
    E.D. Bruycker, Zn–AL–Mg Alloy Coatings: Thermodynamic Analysis and Microstructure-Related Properties (Gent University, Belgium, 2005)Google Scholar
  3. 3.
    S.M.A. Shibli, Process and performance improvement of hot dip zinc coating by dispersed nickel in the under layer. J. Surf. Coat. Technol. 197, 108–114 (2005)CrossRefGoogle Scholar
  4. 4.
    V. Raghavan, Al–Mg–Zn phase diagram evaluations: section II, J. 28, 208–210 (2007)Google Scholar
  5. 5.
    H. Kwak, Cationic doping of MgO surfaces to build corrosion protection in Mg alloys. J. Alloys Compd. 509, 818–819 (2011)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Shougang Research Institute of TechnologyBeijingChina
  2. 2.Beijing key Laboratory of Green Recyclable Process for Iron& steel Production TechnologyBeijingChina

Personalised recommendations