Nanostructured multicomponent Nd-Fe-B magnets prepared by a spark-plasma-sintering approach

•Nd-Fe-B magnets with locally tailored magnetic properties can be prepared with SPS.•Consolidation temperature of ≈650 °C is favorable for co-sintering multiple melt-spun powders.•Nd-Dy-Fe-B powder’s coercivity (2075 kA/m) is preserved in a multicomponent magnet.•Interdiffusion between different Nd-Fe-B materials during sintering is hindered.•Reliable performance over a wide range of operating temperatures is ensured.