A STUDY OF THE EFFECT OF TEMPERATURE AND RATE OF COOLING UNDER CRYSTALLIZATION ON THE STRUCTURE OF CAST ALLOY Al – 30 AT.% Cu

The methods of metallographic, differential thermal and x-ray phase analysis, light and electron microscopy, and measurement of microhardness are used to study the morphological features of the structure of hypereutectic alloy Al – 30 at.% Cu formed due to cooling of liquid phase at a rate of about 2 and about 104 K/sec after superheating above the liquidus. A comparative study of structural and phase transformations in castings is performed.