Microstructure and tensile properties of squeeze cast Al-Zn-Mg-Cu alloy

It is well known that wrought aluminium alloys have tensile properties supe rior to those of the cast products. Wrought grade alloys cannot usually be produced by conventional casting processes to attain the same level of tens ile properties. However, progress in casting methods in recent years has ma de it possible to produce wrought alloys by means of squeeze casting techni ques. In the present study an Al-Zn-Mg-Cu alloy has been produced by squeez e casting. Tensile properties close to those of wrought products have been achieved by controlling the microstructure, pressure, and other processing parameters. MST/4651.