- Fe-Co-Nb-B-Cu alloys lose their nanocrystalline microstructure at a second crystallization process in which (FeCo)B crystals appear as the main boride phase. In this work the structural characteristics and composition of this phase are studied. The amount and grain size of the (FeCo)B phase increase as the Co content in the alloy increases. After recrystallization, α-FeCo crystals remain at a nanometric size. The lattice parameter and Curie temperature of the (FeCo)B phase are reported.
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