PHASE COMPOSITION AND MICROSTRUCTURE OF WASTE OF ELECTROLYTIC PRODUCTION OF HIGH-PURITY ALUMINUM (ANODIC PRECIPITATES)

摘要

The phase composition and structure of alloy Al – 25% Cu – 10% Fe – 10% Si typical for industrial anodic precipitates are studied. The phase diagram of the Al – Cu – Fe – Si system is analyzed and the methods of scanning electron microscopy and x-ray diffractometry are applied. It is shown that such waste contains a high volume fraction of refractory intermetallic particles and can serve an inexpensive stock for making precipitation- hardened composite materials by the method of mechanical alloying.