Homogenization of 6xxx Alloy Ingots with an Addition of Vanadium

Abstract

The selection of material for elements operating in the crumple zone should consider the mechanical properties of alloys and their ability to absorb energy. Undoubtedly, such materials include aluminium alloys with an addition of vanadium. The aim of this study was to evaluate the impact of homogenization conditions on the structure and properties of ingots cast by DC technique at different solidification rates from alloys included in the 6xxx series, such as AlMgSi and AlMgSiCu with an addition of 0.2 wt% and 0.4 wt% vanadium. The alloy structure was examined by light microscopy and scanning electron microscopy combined with an EDX analysis. Changes in mechanical properties were determined by hardness measurements and static compression test after different time/temperature variants of the homogenizing treatment. Optimum parameters of the homogenizing process were determined for the examined ingots and an extension of the homogenization time was considered justified only for ingots containing Cu.