| 摘要 |
PROBLEM TO BE SOLVED: To provide an Al alloy material for welded structure, excellent in weldability, and a welded joint using the same. SOLUTION: The Al alloy material for welded structure is composed of an Al alloy material having a composition consisting of, by weight, 1.5-5% Si, 0.2-1.5% Mg, 0.2-1.5% Zn, 0.2-2% Cu, 0.1-1.5% Fe, further one more of 0.01-1.0% Mn, 0.01-0.2% Cr, 0.01-0.2% Ti, 0.01-0.2% Zr, and 0.01-0.2% V and the balance Al with inevitable impurities, and has excellent weldability. The welded joint is obtained by welding a base metal composed of this Al alloy using an Al-Mg or Al-Si type filler material. |
