“…Currently, ultra-SPD is considered an effective tool to produce a wide range of materials such as binary and ternary alloys and intermetallics [ 16 , 17 ], high-entropy alloys [ 30 ], metal hydrides [ 31 , 32 ], and high-entropy ceramics [ 33 ]. Table 1 summarizes the results of the application of ultra-SPD to different systems in the authorâs group and summarizes the main achievements of each system [ 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 ]. As can be seen in Table 1 , the application of ultra-SPD is not limited to the synthesis of conventional metallic alloys, and it has been recently extended to ceramic materials.…”