In continuous hot dip galvanizing, in particular with galvannealing baths,
competitive reactions occur between iron, zinc and aluminium that may be affected
by other elements such as chromium. Based on thermodynamics modelling and experimental
descriptions, the zinc rich corner of the quaternary Fe-Zn-Al-Cr system is investigated
at 460°C. The results obtained contribute to a better knowledge of the reactivity
of steels in industrial galvanizing or galvannealing baths.