Effect of Surface Morphology and Microstructure on Powdering Resistance Performance of GA Coatings with Different Aluminum Contents

Xun Hua Yuan; Chun Yu Qi; Qi Fu Zhang

doi:10.4028/www.scientific.net/AMR.940.41

Paper Titles

Research on Ni-P-Carbon-Nanotube Electro-Brush Plating Composite Coating Technology
p.24

Effect of Addition of Sc, Zr, Er on Microstructure of Al-Mg Ingot to Generate Welding Wire and Micro-Hardness of Surfacing Layer
p.28

Seperation of Microcystin-RR and Research of its Storage Conditions
p.32

Analysis of the Solubility of TNT and RDX in TNT/RDX/SC-CO₂
p.37

Effect of Surface Morphology and Microstructure on Powdering Resistance Performance of GA Coatings with Different Aluminum Contents
p.41

Preliminary Review of the Influence of Cavitation Behavior in Creep Damage Constitutive Equations
p.46

The Status and Development of Water Treatment Technology for Supercritical Unit
p.52

Modifying Sodium Bicarbonate for Foaming Polymers
p.59

Study of Breeze Vibration of Overhead Transmission Lines with Dampers Using FEM Analysis
p.65

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 940Effect of Surface Morphology and Microstructure on...

Effect of Surface Morphology and Microstructure on Powdering Resistance Performance of GA Coatings with Different Aluminum Contents

Abstract:

The surface morphology and microstructure of galvannealed steel sheet (GA) coatings prepared at different galvannealing parameters were analyzed by X-ray diffraction and SEM, and powdering amount of GA coating was investigated by the double-Olsen powdering tester. The results show that when the Al contents below 0.16 wt%, the Ra of GA coating surface was measured namely below 1.0 μm, and powdering amount of GA coating was below 30 mg/m², it is within a reasonable value required by automotive makers. After that with the Al contents increased in zinc liquid the amount of powdering increased, this means that the powdering resistance performance of GA coating not only depended on the iron content in the coating, but depended on the roughness profiles of the surface coating. When the galvanizing coating with 0.22 wt% Al content and galvannealing at 500 °C, with the inhibition effect of Fe₂Al₅Zn_x inhibit layer, the thickness of δ_1k-phase was different in the GA coating, which deteriorated the powdering resistance performance of GA coating.

You might also be interested in these eBooks

Machinery, Materials Science and Engineering Applications 2014

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 940)

Pages:

41-45

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.940.41

Citation:

Cite this paper

Online since:

June 2014

Authors:

Xun Hua Yuan*, Chun Yu Qi, Qi Fu Zhang

Keywords:

GA Coating, Powdering Resistance Performance, Roughness Profile, Structure Characteristics

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Yuan Xunhua, Zhang Qifu and Jiang Sheming. Transactions of Materials and Heat Treatment, 2011, 32(6): 132-137.

Google Scholar

[2] Yuan Xunhua, Liu Xin, Chen Binkai, et al. Heat Treatment of Metals, 2010, 35(10): 11-15.

Google Scholar

[3] Luis G Garza and Chester J Van Tyne. The 7th international conference on zinc and zinc alloy coated steel sheet, Osaka, Japan, 2007: 248-253.

Google Scholar

[4] Rangarajan V. Transaction Journal of Material and Manufacture, 1997, 106(5): 182-192.

Google Scholar

[5] Zhong W, Ng H F and Ichikawa M. the 4th international conference on zinc and zinc alloy coated steel sheet, Makuhari, Chiba, Japan, 1998: 603-607.

Google Scholar

[6] Zhang Qifu, Yuan Xunhua, Jiang Sheming, et al. Heat Treatment of Metals, 2012, 37(6): 108-111.

Google Scholar