Journal of Lanzhou University of Technology ›› 2025, Vol. 51 ›› Issue (6): 9-17.

• Materials Science and Engineering • Previous Articles     Next Articles

The influence of Titanium on the mechanical properties of hot-dip Al-Zn plated coating on steel sheet

TANG Xing-chang1, LI Kun-yu1, LIU Xiao-hua2, XU Xue-ming1, ZHANG Zhi-jian1   

  1. 1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China;
    2. Jiuquan Iron and Steel Group, Jiayuguan 735100, China
  • Received:2025-02-11 Published:2025-12-31

Abstract: The mechanical properties of the coating are the key to the service life of coated products. The effect of grain refinement caused by the addition of titanium on the mechanical properties of the coating was investigated by taking the aluminum-zinc-plated steel plate coating as the research object. The mechanical properties of the two coatings was tested with the help of nanoindentation meter, abrasion meter and in-situ test bench. The results showed that the addition of Ti to the plating solution can form TiAl-phase fine particles as heterogeneous nucleation points in the plating layer, which promotes grain refinement and makes the titanium-containing plating layer to show more excellent hardness, stiffness, toughness, roughness, wear resistance and bonding force.

Key words: Al-Zn plated coating, titanium, mechanical property, grain refinement

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