“…It has been reported that materials with ultrafine grains enable high speed-superplastic deformation at elevated temperatures, high corrosion resistance [6], and high specific strength for light weight constructions [3]. A number of techniques including severe plastic deformation such as high pressure torsion, equal channel angular pressing, and cyclic extrusion compression [4,5,7] have been developed for obtaining such materials, but they are plagued by two main drawbacks.…”