Hot-dipped steel material and method for producing same

摘要

Disclosed is a hot-dipped steel material which exhibits good corrosion resistance and good formability, while having a plating layer with good appearance. Specifically disclosed is a hot-dipped steel material in which an aluminum-zinc alloy plating layer is formed on the surface of a steel material. The aluminum-zinc alloy plating layer contains Al, Zn, Si and Mg as constituent elements, and the Mg content is 0.1-10% by mass. The aluminum-zinc alloy plating layer contains Si-Mg phases in an amount of 0.2-15% by volume, and the mass ratio of Mg in the Si-Mg phases to the total mass of Mg is not less than 3%.