Brazed lap joint, method for manufacturing brazed lap joint, and vehicle component

Abstract

A brazed lap joint according to an aspect of the present invention includes: a first steel sheet and a second steel sheet, the first steel sheet and the second steel sheet being stacked; a zinc-based-plated layer, the zinc-based-plated layer being an overlapping surface of the first steel sheet and the second steel sheet; and a brazed zone including a brazing metal joining an end surface of the first steel sheet and a surface of the second steel sheet, and a heat-affected zone around the brazing metal, in which a concentration of B atoms at a prior austenite grain boundary of the second steel sheet excluding the brazed zone is 2.0 atm % or more, an average effective grain size of the second steel sheet excluding the brazed zone is 7.0 μm or less, an average effective grain size of the second steel sheet in a root portion, a toe portion, and a middle portion between the root portion and the toe portion is 15.0 μm or less, a Vickers hardness of the brazing metal is 250 or less, and a leg length of the brazed lap joint on the second steel sheet side is 2.0 mm or more.

Dependencies are inferred from the claim text.