FEATURES IN THE FORMATION OF THE STRUCTURE AND PROPERTIES OF ALUMINUM ALLOYS MECHANICALLY ALLOYED WITH ALUMINUM OXIDE

摘要

The structure of composite materials based on alloys having the following composition is investigated: Al-4 percent Cu, Al-6 percent Zn-1.5 percent Mg-1 percent Cu and Al-12 percent Si-1.2 percent Mg-2 percent Cu -1 percent N - 1 percent Fe-0.5 percent Mn, strengthened with particles of Al_2O_3 at different stages of fabrication by means of mechanical alloying is investigated. It is shown that, on the whole, the composition of composite materials does not have any effect on the sequence of formation of structure in the course of mechanical alloying, though it determines the time it takes to attain a homogeneous structure in the material.