| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a welded joint which has an excellent press-formability after welded by solving the problem of the deterioration of formability of the welded joint part due to the softening of the zone which is influenced by welding heat. SOLUTION: The welded joint is formed by joining metallic materials, and at least on the side of a metallic material in which the value of a product (Hv0×t) of Viekers hardness (Hv0) and the thickness (t) of the metallic material, which the metallic material has before the metallic material is welded, is smaller, the width (w) of the zone, which is influenced by the welding heat and Vickers hardness of which zone decreased from the value the zone has before being welded, and the value (ΔHv), by which the minimum Vickers hardness in the zone decreased from the value the zone has before being welded, are within the following relation (1),ΔHv/Hv0×(w/t)<=0.05 (1).</p> |
