“…Different variations of SPD processes, e.g. equal channel angular pressing (ECAP), high pressure torsion (HPT), multi-axial forging (MAF), etc., have been successfully applied to fabricate UFG materials [4][5][6][7][8][9][10][11][12][13][14][15]. Accumulative roll-bonding (ARB) is one such SPD process which has great potential for industrial scaling up since it does not need forming facilities with large load capacity [16].…”