Welded Joint

Abstract: [Problem] To further improve corrosion resistance in the vicinity of a weld toe. [Solution] A welded joint according to the present invention has first and second steel plates that are connected to a welding bead part having a length in an extension direction in a plan view. The first steel plate and the second steel plate each have a heat-affected section and a non-heat-affected section. In the first and second steel plates, at least one of the first and second steel plates has a plating layer having a prescribed chemical composition in the non-heat-affected section. With regard to a region in the range of up to 100 µm from a starting point which is a specific position near a weld toe, when a cross-section is observed with a scanning electron microscope, in the plating layer, the average area ratio of a Fe-Al metallic structure is 0-95%, the average area ratio of a Mg-Zn metallic structure is 5-100%, and the average area ratio of a ?-Zn phase is no more than 3 area percent.

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