航空工业急需的一种低电阻铝合金应具有较高的机械性能,但是,纯金属中加入其它元素后,将使电阻率提高。要达到二者兼优,合金成分和热处理制度起着决定性作用。试验表明:Al-Cu-Mg系和Al-Mg-Si-Cu系合金,在一定的成分范围内,经过适当固溶和时效处理,既具有较低的电阻率,又具有较高的机械性能。合金成分和时效制度是决定电阻率高低的关键因素。 A low resistance aluminum alloy urgently needed by the aviation industry should have high mechanical properties, however, the addition of other elements in the pure metal will increase the resistivity. To achieve both the best, alloy composition and heat treatment system plays a decisive role. The results show that both Al-Cu-Mg and Al-Mg-Si-Cu alloy have the characteristics of low solid solution and aging within a certain composition range, both low resistivity and high mechanical properties . Alloy composition and aging system is the key factor in determining the level of resistivity.