Sampling the Cu–Fe–Co phase diagram by severe plastic deformation for enhanced soft magnetic properties

Initial powder mixtures of Cu, Fe and Co are exposed to severe plastic deformation by high-pressure torsion prepare solid solutions. A broad range compositions is investigated, whereas this study aims at the synthesis soft magnetic materials therefore formation a homogeneous nanocrystalline microstructure. For intermediate ferromagnetic contents, room temperature yields single-phase supersaturated higher two consecutive steps different temperatures yield desired Depending on Co-to-Fe-ratio, either solution or nanocomposite forms. The composite exhibits an enhanced moment, indicating (Fe,Co)-alloy upon deformation. Soft properties verified for large Co-to-Fe-ratios microstructure found remain stable up 400 {\deg}C.