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The evolution of the microstructure and mechanical properties of deformed sheets made of a new Al–4Cu–2.7Er alloy has been studied in the course of homogenization and annealing. The structure of the cast alloy consists of a dispersed eutectic ((Al) + Al8Cu4Er), Al3Er-phase inclusions located along the dendritic-cell boundaries, and a nonequilibrium AlCu phase. During annealing at 605°C before quenching,...
A lack of domestic technology for preparing aluminum-erbium master alloy intended for improving the physicomechanical properties of aluminum alloys gives rise to the importance of creating technology for aluminothermal reduction of erbium compounds from chloride-fluoride melts. Thermodynamic analysis of aluminothermal reduction of erbium fluoride and oxide taking account of intermetallic compound...
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