HOT PRESS-FORMED MEMBER HAVING EXCELLENT CRACK PROPAGATION RESISTANCE AND DUCTILITY, AND METHOD FOR PRODUCING SAME

摘要

The present invention relates to a hot press-formed member suitable as a material for a vehicle and, more specifically, to a hot press-formed member having excellent crack propagation resistance and ductility and a method for producing the same. The present invention relates to a hot press-formed member having excellent crack propagation resistance and ductility and a method for producing the same, the hot press-formed member comprising a base steel sheet and a zinc or zinc alloy plating layer formed on at least one surface of the base steel sheet, wherein the base steel sheet includes, by wt%, 0.08-0.30% of carbon (C), 0.01-2.0% of silicon (Si), 3.1-8.0% of manganese (Mn), 0.001-0.5% of aluminum (Al), 0.001-0.05% of phosphorus (P), 0.0001-0.02% of sulfur (S), 0.02% or less of nitrogen (N), and the remaining amount of Fe and other impurities. The hot press-formed member comprises a residual austenite having 1-30 area% as a micro-structure, and a content ratio of Mn (wt%)/Zn (wt%) in an oxide layer of 0.5-1.2 µm in a thickness direction from the surface layer of the plating layer is 0.1 or greater.