ALUMINUM ALLOY-PLATED STEEL SHEET, HOT-FORMED MEMBER, AND METHODS FOR MANUFACTURING ALUMINUM ALLOY-PLATED STEEL SHEET AND HOT-FORMED MEMBER

摘要

An embodiment of the present invention provides: an aluminum alloy-plated steel sheet; a hot-formed member; and methods for manufacturing the aluminum alloy-plated steel sheet and hot-formed member. The aluminum alloy-plated steel sheet has excellent surface quality and weldability, and includes a steel sheet substrate and an aluminum alloy-plated layer formed on the steel sheet substrate, wherein the aluminum alloy-plated layer comprises 21-35 wt% of Zn, 1-6.9 wt% of Si, and 2-12 wt% of Fe, with the balance being Al and other inevitable impurities.