Texture analysis of the effect of non-basal slip systems on the dynamic recrystallization of the Mg alloy AZ31

Comparative study of microstructure and texture of cast and homogenized TX32 magnesium alloy after hot deformation

“…5(a) and 5(c)), wherein the recrystallized grains failed to retain the same orientation as that of the original due to large grain boundary misorientations between neighbouring grains. This type of slip system activity is similar to that observed in AZ31 alloy [31], in which both prismatic and pyramidal <c+a> slip were activated in favourably oriented grains during compression at 300°C and at a low strain rate. The recovery mechanism associated with the basal+pris-matic slip is the climb, given the low stacking fault energy (SFE) on basal planes (60 mJ/m 2 to 78 mJ/m 2 ) [32].…”

Effect of extension 101-2 twins on texture evolution at elevated temperature deformation accompanied by dynamic recrystallization

“…Commercial magnesium alloy AZ31, the main material discussed in this work, has a strong basal texture, and therefore, different slip and twinning systems are active depending on the loading direction. The DRX behaviour of AZ31 Mg alloy has been studied at different temperatures and strain rates via experiments (Myshlyaev et al (2002); Al-Samman and Gottstein (2008); Srinivasarao et al (2012)). The experimental results showed that the initial texture has a significant effect on the stress-strain response as well as on the twinning behaviour at different temperatures and strain rates (Barnett (2001); Wang et al (2011); ; Li et al (2013a)).…”

“…The experimental results showed that the initial texture has a significant effect on the stress-strain response as well as on the twinning behaviour at different temperatures and strain rates (Barnett (2001); Wang et al (2011); ; Li et al (2013a)). In the work by Srinivasarao et al (2013), it was concluded that {1012} twins appeared at the initial stage of the deformation before DRX started, and twinning was not a dominant deformation mechanism above 200°C. Tension and compression tests at the temperature range of 200°C and 400°C and strain rates 10 −2 s −1 and 10 −4 s −1 of AZ31 showed that during 200°C compression test along extrusion direction (ED), most of the grains undergo twinning (Al-Samman et al (2010)).…”

Grain size and texture dependence on mechanical properties, asymmetric behavior and low temperature superplasticity of ZK60 Mg alloy

“…However, with increasing of temperature, the CRSS of non-basal slip systems decreases gradually, while that of basal slip remains constant. Accordingly, nonbasal slip mechanisms are responsible for improved formability of Mg at elevated temperatures (N180°C) [9,10]. Since the non-basal slip mechanisms are only observed at high temperatures, plastic deformation in polycrystalline Mg alloys appears to be governed entirely by basal slip system at room temperature [11].…”