| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a 7000 type aluminum alloy plate for structural materials which combines strength, moldability and corrosion resistance.SOLUTION: A high strength is secured by reducing the Zn amount of a 7000 type aluminum alloy of a specified composition produced by a conventional method and adjusting the balance of the Zn amount with the Mg amount, and a high strength, good moldability and a high corrosion resistance, requirements of structural materials, are achieved with a structure which shows a specified heat absorption peak temperature and a maximum height of an exothermic peak in a differential scan calorimetric analysis curve obtained by aging a plate after production at room temperature.</p> |
