Study on Hot Dip and Coating Structure of 55% Al-Zn Alloy Coated Steel

Yan Hong Leng; Yun Li Feng; Meng Song

doi:10.4028/www.scientific.net/AMR.415-417.276

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 415-417Study on Hot Dip and Coating Structure of 55%...

Study on Hot Dip and Coating Structure of 55% Al-Zn Alloy Coated Steel

Abstract:

Hot dip galvanizing treatments of Galvalume were studied by using methods of Gleeble thermal simulation experiment and optical microscopy(OM), scanning electronic microscopy (SEM), X-ray energy dispersive analysis(EDAX), X-ray diffraction(XRD) and so on. Meanwhile, surface morphology, microstructure, phases and the respective compositions of Al-Zn alloy coating plate were investigated, the formation of hot dipped 55％Al-Zn alloy coating were analyzed. The results show that to get better coated surface, in-zinc pot temperature should be controlled in the range of 590~610°C, and height of air-knife nozzle should be kept in the range of 150~200mm. Surface layer of 55％Al-Zn alloy coating is covered by Al-Zn alloy, the intermediate alloy layer is consisted of binary and ternary compounds, such as θ phase (FeAl₃), Al_0.3Fe₃Si_0.7 and Al_3.21Si_0.47.

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Periodical:

Advanced Materials Research (Volumes 415-417)

Pages:

276-280

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.415-417.276

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Online since:

December 2011

Authors:

Yan Hong Leng, Yun Li Feng, Meng Song

Keywords:

55%Al-Zn Alloy Coated Steel Sheet, Hot Dipped, Microstructure, Phase

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