A Study of the Structure and Properties of Aluminum Alloys with Copper Produced Under Superfast Cooling of Melt

Abstract

The methods of x-ray diffraction analysis, electron microscopy and hardness measurement are used to compare the structures and properties of strips from Al – Cu alloys (5, 10 and 30 at.% Cu) obtained under the conditions of superfast cooling of the melt for different quenching temperatures and alloy compositions. The crystal structure of all the strips contains α-Al and Al₂Cu phases. The effect of the heat treatment of the melt on the morphology, size and content of the structural components and on the microhardness of the strips is demonstrated.