Effect of the steel substrate on the kinetics of iron enrichment and on the processing variables of hot-dip galvannealed coatings on steel sheets

Abstract

The effect of the steel substrate on the kinetics of iron enrichment was discussed. The processing window of hot-dip galvannealed coatings was investigated on steel sheets. Two hot-dip galvanized sheets employed for the process were produced in zinc baths with similar aluminum content. The comparison between the isothermal kinetics of iron enrichment of IF and low carbon steel zinc coated sheets was plotted as a function of time, temperature and transformation.