Welded Joint

Abstract: The present invention addresses the problem of providing a welded joint in which LME cracking during the production is suppressed. A welded joint according to the present invention is characterized by comprising a high-strength steel sheet which has a tensile strength of 780 MPa or more, while having a specific chemical composition. This welded joint is also characterized in that: in a non-heat-affected zone that is at a distance of 5 mm or more from the outer edge of a spot welded part, the depth at which the C concentration as measured by GDS is 0.01% or less is 3 µm or more in the depth direction of the high-strength steel sheet, and the surface roughness of the high-strength steel sheet is more than 3.0 µm; and in a heat-affected zone that is at a distance of 0 µm to 100 µm from a welded shoulder part, the thickness of a layer which has an area ratio of cementite of 10% or less is 8 µm or more in the depth direction of the high-strength steel sheet.

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