Welded Joint

Abstract: The present invention addresses the problem of providing a welded joint in which liquid metal embrittlement (LME) cracking during manufacturing is suppressed. A welded joint according to the present invention is characterized by comprising a high-strength steel sheet with a tensile strength of 780 MPa or more, and is characterized in that: the high-strength steel sheet has a prescribed chemical composition; when the C concentration of the high-strength steel sheet is measured by GDS in a region separated from the outer end of the nugget by 5 mm or more, in the depth direction of the steel sheet, the depth at which the C concentration is 0.01% or less is 3 µm or more; the surface roughness of the high-strength steel sheet in terms of an arithmetic mean roughness Ra is 3.0 µm or less; and a layer in which the area percentage of cementite is 10% or less and which externally extends in a range from 0 to 100 µm from the outer end of the welded shoulder section has a thickness of 5 µm or more in the depth direction of the high-strength steel sheet.

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