| 摘要 |
Provided is a high-strength hot-dip-galvanized steel sheet exhibiting excellent plating quality in worked sections and excellent plating appearance. The present invention is provided with: a cold-rolled steel sheet which comprises a specific composition, is provided with a structure having a martensite area ratio of at least 7% but less than 25%, and a ferrite area ratio of at least 50%, and has an internal oxidation amount in a ferrite surface layer section of not more than 0.05 g/m2 per surface; an intermetallic compound which is formed on the cold-rolled steel sheet, includes at least 0.12 g/m2 but not more than 0.22 g/m2 of Al, and includes Fe2Al5 having an average grain size of less than 1.0 µm; and a hot-dip-galvanized layer which is formed on the intermetallic compound, satisfies 0.3%≤Al%≤0.6% (Al% indicates the content (mass%) of Al in the hot-dip-galvanized layer), and has a surface roughness (Ra) of 0.8-1.6 µm inclusive, a glossiness (G value) of 550-750 inclusive, and a zinc-basal-plane orientation ratio (Zn(002)/(004)) of 60-90% inclusive. |
