Studies on a High Strength AL-Zn-Mg-Cu Cast Alloy

摘要

Aluminium is one of the most versatile cast metals that have found wide use in aerospace structural applications and automobile industry Aluminium is best known for two properties - light weight and corrosion resistance. Apart from light weight, the special advantages of aluminium alloys for castings are the relatively low melting temperatures, low solubility of all gases except hydrogen, and the good surface finish that is possible to be achieved in the cast products. Despite the development of novel engineering materials such as fibre-reinforced composites, aluminium alloys still continue to be the dominating structural materials, mainly due to their high specific strength (strength/density).