Equal channel angular pressing followed by combustion synthesis of titanium aluminides

Microstructures evolution and phase transformation behaviors of Ni-rich TiNi shape memory alloys after equal channel angular extrusion

“…As one of the SPD methods, the equal channel angular extrusion (ECAE) technique was first introduced by Segal and his colleagues in 1970s and 1980s [2,3]. The method had been applied in the production of various ultrafine grain materials successfully, such as TiNi alloys [4][5][6][7][8][9][10][11][12], TiAl alloys [13], Ti [14][15][16], Mg, Al and Cu alloys [17][18][19][20][21][22][23][24][25] and some interesting results were obtained [26][27][28][29].…”

Microstructure Characterization of an Aluminium Alloy Processed by Milling Followed by Spark Plasma Sintering

“…Alternatively, to overcome the problem of grain coarsening during annealing, the attention has been focused on the benefits obtained when different techniques are combined. For example, ECAP was combined with conventional techniques such as combustion synthesis, powder compaction, and conventional forming by cold extrusion or cold plastic deformation by rolling . Indeed, the combination of different SPD techniques, results to refining the grain size to a larger extent and improving the temperature range in which the grain size remains in the nanometer domain.…”

Effects of equal channel angular extrusion and aging treatment on R phase transformation behaviors and Ti3Ni4 precipitates of Ni-rich TiNi alloys

“…Recently, there were the extensive interests in the ECAE research, and many successful applications have been reported for various metal and alloy materials with ultrafine grains, such as TiNi alloys [10][11][12][13][14][15][16][17], TiAl and TiNb alloys [18,19],Ti [20][21][22], Mg and Cu alloys [23,24] etc. Among these ultrafine grain materials, Ni-rich TiNi alloys have many applications in engineering and medical fields for their superior properties, such as the shape memory effect (SME) and the pseudoelasticity (PE) [11,25].…”