Galvanealed coating evolution for hot forming steel

2nd International Conference on New Material and Chemical Industry

材料科学;化学工业

Fang, F.^1 ; Du, X.F.^1 ; Chen, Y.M.^1

Research and Development Center, Wuhan Iron and Steel Co., Wuhan

430080, China^1

关键词: Coating quality;    Coating weights;    Dew points;    Electrochemical potential;    Gamma phase;    Hot forming;    Three parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/292/1/012101/pdf
DOI  :  10.1088/1757-899X/292/1/012101

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The aim of the galvanealing experiments with three parameters of dew point, protective atmosphere and galvanealing time was to monitor the changes in coating quality and the evolution of coating after hot forming. The results show that, the three parameters have little effect on coating weight (thickness), and the average iron amount was within 9.51 to 14.9 %. The ζ, δ and Γ phase for the as-received galvanealed samples transformed to Γ-Fe4Zn9and α-Fe (Zn) after reheating. The existence of a thin film of Γ-Fe4Zn9increases the electrochemical potential to the base steel by a good amount and will not generate LME.