Welded Joint

Abstract: Provided is a welded joint characterized by comprising a plurality of stacked steel sheets, nuggets joining the plurality of steel sheets, and a spot welded section having pressure welded sections and heat affected sections formed around the nuggets, wherein: at least one of the plurality of steel sheets is a plated steel sheet provided with a base material steel sheet and a plating layer formed at least on a surface of the base material steel sheet corresponding to the outermost surface of the plurality of steel sheets; the plating layer in the outermost region of the heat affected sections has a prescribed chemical composition; the ratio "Al concentration in the center of the plating layer"/"Al concentration in a plating layer position where the Fe concentration is 50% of the base material steel sheet" is 0.10-1.50 when the plating layer is measured using GDS; and the surface ratio of the ß-CuZn phase is 50% or less in the plating layer of a welded shoulder section of the outermost surface of the plurality of steel sheets.

Patent Information

Applicants

Inventors

Specification

Documents

Application Documents