Plated Steel Sheet

Abstract: [Problem] To further suppress the occurrence of LME and coating film blistering at the time of welding. [Solution] The plated steel sheet according to the present invention includes a plating layer disposed on at least a part of the surface of the steel sheet, the plating layer having a chemical structure comprising, in mass%, 30.00 to 70.00% Al, 7.00 to 20.00% Mg, and 0.01 to 15.00% Fe, and selectively having one or more elements selected from the group consisting of element group A to element group G, the remainder being at least 5.00 mass% Zn and impurities. As regards the surface structure of the plating layer, the average area ratio of the a/t lamellar structure, which is the metal structure in which the rod-shaped a phase is dispersed in the t parent phase, is 30% to 95%. The measurement results obtained by an X-ray diffraction analysis of the plating layer demonstrates an intensity ratio of the peak strength I220 corresponding to the (220) surface of the a phase relative to the peak strength I111 corresponding to the (111) surface of the a phase, I 220/I111, of 0.25 or more.

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