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1. 发明授权

US4863528A Aluminum alloy product having improved combinations of strength and corrosion resistance properties and method for producing the same 失效
标题翻译：具有改进的强度和耐腐蚀性能的组合的铝合金产品及其制造方法
公开(公告)号：US4863528A
公开(公告)日：1989-09-05
申请号：US99445
申请日：1987-09-21
申请人： Melvin H. Brown , James T. Staley , John Liu , Sootae Lee
发明人： Melvin H. Brown , James T. Staley , John Liu , Sootae Lee
IPC分类号： C22F1/053
CPC分类号： C22F1/053
摘要： There is disclosed a method for producing an aluminum alloy product and the resulting product having improved combinations of strength and corrosion resistance. The method includes providing an alloy consisting essentially of about 6-16% zinc, about 1.5-4.5% magnesium, about 1-3% cooper, one or more elements selected from zirconium, chromium, manganese, titanium, vanadium and hafnium, the total of said elements not exceeding about 1%, the balance aluminum and incidental impurities. The alloy is then solution heat treated; precipitation hardened to increase its strength to a level exceeding the as-solution heat treated strength level by at least about 30% of the difference between as-solution heat treated strength and peak strength; subjected to treatment at a sufficient temperature or temperatures for improving its corrosion resistance properties; and again precipitation hardened to raise its yield strength and produce a high strength, highly corrosion resistant alloy product.
摘要翻译：公开了一种生产铝合金产品的方法，所得到的产品具有改善的强度和耐腐蚀性的组合。该方法包括提供基本上由约6-16％的锌，约1.5-4.5％的镁，约1-3％的铜，一种或多种选自锆，铬，锰，钛，钒和铪的元素组成的合金，总计的元素不超过约1％，余量为铝和杂质。然后将该合金进行固溶热处理; 沉淀硬化以将其强度提高到超过溶液热处理强度水平的至少约30％的溶液热处理强度和峰强度之间的差异; 在足够的温度或温度下进行处理以改善其耐腐蚀性; 再次沉淀硬化以提高其屈服强度，并产生高强度，高耐蚀合金产品。

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