The study of the role of Mg content in microstructure of Zn-1.6Al-<i>x</i>Mg alloy coatings

Jin Yongqing; Guo Taixiong; Dong Xueqiang; Deng Han

doi:10.7513/j.issn.1004-7638.2022.05.028

Volume 43 Issue 5

Nov. 2022

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Jin Yongqing, Guo Taixiong, Dong Xueqiang, Deng Han. The study of the role of Mg content in microstructure of Zn-1.6Al-xMg alloy coatings[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 191-196. doi: 10.7513/j.issn.1004-7638.2022.05.028

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Jin Yongqing, Guo Taixiong, Dong Xueqiang, Deng Han. The study of the role of Mg content in microstructure of Zn-1.6Al-xMg alloy coatings[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 191-196. doi: 10.7513/j.issn.1004-7638.2022.05.028

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The study of the role of Mg content in microstructure of Zn-1.6Al-xMg alloy coatings

doi: 10.7513/j.issn.1004-7638.2022.05.028

1.
Cold Rolling Plant of Panzhihua Steel & Vanadium Co., Ltd, Panzhihua 617000, Sichuan, China
2.
Pangang Group Research Institute Co., Ltd, Panzhihua 617000, Sichuan, China

Received Date: 2022-06-28
Publish Date: 2022-11-01

Abstract

Abstract

The Zn-1.6Al-xMg alloy coating steel sheets with different Mg content were prepared by hot dip galvanizing simulator, and the microstructure of coatings was analyzed using XRD, SEM and EDS. The results indicate that all the microstructures of Zn-1.6Al-xMg coatings are composed of massive Zn-rich phases, Zn/MgZn₂ binary eutectic structures, fine Zn/Al/MgZn₂ ternary eutectic structures, and a few dotted Al-rich phases. However, the volume fraction of Zn-rich phases and ternary eutectic structures decreases with the increase in Mg content of coatings, while the volume fraction of binary eutectic structures increases. Furthermore, the dotted Al-rich phases gradually transform to banded structure. As for the cross section, the microstructure of coatings shows that the ternary eutectic structure decreases, while the binary eutectic structure increases with the increasing Mg content.
- Zn-Al-Mg alloy coatings,
- Mg content,
- microstructure,
- eutectic structures,
- SEM

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References(17)

References

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