Nagyszilárdságú alumíniumok alakíthatóságának elemzése

Abstract

In the past 10 years the developments of automotive materials and technologies have been influenced by the environmental regulations. Reducing the mass of vehicles is important to reduce the carbon dioxide emission. In order not to break the safety standards with the mass reduction, the strength of the used materials should be increased. The density of aluminium alloys is lower than that of steels, which is positive for weight reduction. In order not to break the safety standards with the mass reduction, the strength of the used aluminium alloys should be increased, therefore the modem alloys have higher strength. However, due their different alloying elements and the rigid disperse precipitates phase they create, the ductility of these materials is not so good. The bad formability is a serious technical challenge for automotive engineers. Because of this, the objective of this paper is to present the newest HFQ™ process that solve this problem.