Microstructural and textural investigation of an Mg–Dy alloy after hot plane strain compression

Characterization of microstructure and texture of binary Mg-Ce alloy processed by equal channel angular pressing

“…However, recently, it has been observed that TDRX occurred at extension twins in processed Mg-0.4Dy alloys [57]. As can be seen from the Image Quality (IQ+ED-IPF) map…”

“…The recrystallized grains can be separated from the deformed ones by using the grain orientation spread (GOS) approach [56]. GOS is defined as the mean standard deviation of all the orientations inside the grain and usually, recrystallized grains in Mg-based alloys have GOS values less than 2° [56,57]. As shown in Figure 7, the fraction of recrystallized grains increases with the increasing number of ECAP passes and deformation temperature.…”

“…ECAP at 310 °C through 1-4 passes via route Bc) and undergoing dynamic precipitation of Mg17Al12 in which the fraction of DRX increased from 39 % after 1 pass up to 77 % after 4 passes [37]. Recently, it was found that the binary Mg-0.4Dy (wt.%) alloy shows retardation of DRX during plane strain compression test even at 400 °C under strain rate of 10 -4 s -1 where a complete DRX is often reported in Mg-based alloys [30,[57][58][59]. This behavior has been explained by the fact that the activation of non-basal slip systems such as <c + a> pyramidal slip system is easy during deformation in Mg-RE alloys and in this case DRX is not needed to accommodate the deformation [57].…”

“…Recently, it was found that the binary Mg-0.4Dy (wt.%) alloy shows retardation of DRX during plane strain compression test even at 400 °C under strain rate of 10 -4 s -1 where a complete DRX is often reported in Mg-based alloys [30,[57][58][59]. This behavior has been explained by the fact that the activation of non-basal slip systems such as <c + a> pyramidal slip system is easy during deformation in Mg-RE alloys and in this case DRX is not needed to accommodate the deformation [57]. Indeed, it has been recently reported that the pyramidal <c + a> slip system is the main deformation mode responsible for the accommodation of deformation at room temperature in Mg-0.5Ce (wt.%) alloys [60].…”

Evaluation of static recrystallization and grain growth kinetics of hot-rolled AZ31 alloy

“…At high temperatures, the formability of Mg-based alloys is increased and improved since further slip systems could be thermally activated and also due to the occurrence of DRX. In fact, DRX is the principal mechanism responsible for grain refinement in Mg-based alloys during deformation processing [9][10][11][12][13][14][15][16].…”