Deformation and texture formation mechanism of hot-deformed SmCo5 nanocrystalline magnets

Realizing the deformation and texture formation mechanism of the HD SmCo 5 magnets were rarely reported, which restricted the further enhancement of its magnetic properties. Here, we prepared the anisotropic SmCo 5 nanocrystalline magnets by hot pressing and hot deformation (HP-HD). The magnetic properties, texture, and microstructure of the magnets with different height reductions were systematically studied. Based on the characterization results, for the HD SmCo 5 nanocrystalline magnets, it is inferred that the deformation and texture formation mechanism are attributed to the coordination of precipitated phases, dislocation slip, stacking fault formation, and regular grain rearrangement. Based on the characterization of microstructure and texture evolution for the HD SmCo 5 nanocrystalline magnets, it is inferred that the deformation and texture formation mechanism are attributed to the coordination of precipitated phases, dislocation slip, stacking fault formation, and regular grain rearrangement. • Microstructure evolution was systematically studied to discuss the deformation and texture formation mechanism. • The deformation and texture formation mechanism are attributed to the coordination of precipitated phases, dislocation slip, stacking fault formation, and regular grain rearrangement. • The HD SmCo 5 magnets require a large height reduction to obtain excellent magnetic anisotropy.