科研之友
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摘要
A series of Fe0.5-xCoxCu0.5 alloys were-obtained by Mechanical alloying with x=0, 0.1, 0.2, 0.3, 0.4 and 0.5. The microstructure of them samples with different milling times were measured and analyzed by the methods of XRD and DSC considering the transition temperature of gamma phase. The results showed that the fcc phases of Fe0.5-xCoxCu0.5 alloys for different compositions had been obtained under 60 h milling. The average grain size, the average square root of second strain and the average value of the dislocation density of Fe0.3Co0.2Cu0.5 alloy powders had a little relationship with the composition. For Co0.5Cu0.5, the lattice parameter is smaller than that of pure Cu. The composition and microstructure of the samples with the same milling have. a lot of effects on the transition temperature of gamma phase and exothermic enthalpy.
