Work hardening and microstructure of AlMg5 after severe plastic deformation by cyclic extrusion and compression

Cyclic high-pressure torsion of nickel and Armco iron

“…Richert et al [29] reported that similare stages of deformation are observed in cyclic experiments as in experiments with monotonic deformation, although the accumulated strains have to be much higher.…”

Equivalent Strains in Severe Plastic Deformation

“…The curve shows several stages that are called A, B, C, and D. Figure 6 shows the flow curve of a similar material obtained in unidirectional strain showing the conventional stages III, IV, and V. Very extensive investigations [6,7] have shown that the development of microstructure in stages B, C, and D corresponds to the well known stages III, IV, and V. This means that the strain accumulated by reversals of strain path is not equivalent to unidirectional strain so that Equation 5 should be written as…”

“…Flow stress vs. accumulated strain for AlMg5 deformed by CEC (from Richert et al[7] ). Flow stress vs. strain for AlMg5 deformed by rolling l and torsion d (from Richert et al[7] ).…”

Microstructure and enhanced mechanical properties of an Mg–10Gd–2Y–0.5Zr alloy processed by cyclic extrusion and compression

“…These studies mainly focused on the AZ type Mg alloys [3][4][5]. Conventional methods of SPD processing include ECAE, high-pressure torsion (HPT) and cyclic extrusion and compression (CEC) [8][9][10][11][12]. As a kind of continuous SPD processing, CEC seems to be more adaptable for industrial applications.…”