  The ferromagnetic {\alpha}-MnBi phase as non-rare earth magnetic material has
gained increasing interest, but fabrication of large volumes containing a
significant amount of {\alpha}-MnBi is still challenging. Targeting successful
processing strategies, we apply multistep severe plastic deformation with
intermediate magnetic field assisted annealing. The subsequent severe plastic
deformation renewed the high amount of material defects and lead to
microstructural refinement of the previously formed {\alpha}-MnBi phase. Thus,
{\alpha}-MnBi phase content is enhanced during final annealing. Secondly, the
magnetic coercivity increases. These results suggest that further optimization
will pave the way towards non-rare-earth bulk magnetic materials with enhanced
{\alpha}-MnBi phase content.
