Effect of initial texture on dynamic recrystallization and deformation mechanisms in AZ31 Mg alloy extruded at 573K

Effect of cold pre-forging on the microstructure and mechanical properties of extruded Mg–8Sn–1Al–1Zn alloy

“…Numerous {10-12} twins can therefore be generated inside the initial {10-12} twin bands during the initial stages of extrusion prior to the initiation of DRX [15], and these newly formed {10-12}-{10-12} twin boundaries subsequently act as DRX nucleation sites during low-temperature extrusion (200 °C) [16], consequently increasing the DRX fraction of the extruded alloy. For this reason, the final DRX fraction of the 15% CPF extruded alloy is comparable to that of the 10% CPF alloy, despite the relatively low amount of HABs in the billet.…”

Effect of local strains on the texture and mechanical properties of AZ31 magnesium alloy produced by continuous variable cross-section direct extrusion (CVCDE)

“…At the same time, texture resulting from DRX also has a great influence on the mechanical properties and formability of magnesium alloys [12]. Because of Due to the HCP crystal structure, Mg alloys have limited slip systems.…”

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

“…Thus, at the strain ratesǫ < 10 −1 s −1 , the effect of twinning was negligible at high temperature deformation (Ma et al (2014)), and some elevated temperature tests also revealed very few twins (Sitdikov and Kaibyshev (2001); Al-Samman and Gottstein (2008); Kuc et al (2008)). However, reported high amount of twins during uniaxial tension and compression at dynamic strain rates, and it was shown in the work of Li et al (2013a) that the texture evolution is more sensitive to strain rate at 400°C in AZ31 Mg alloy. Galiyev et al (2001) in their work reported active twinning, basal and c + a slip systems during deformation at < 200°C in ZK60 Mg alloy.…”

“…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)). 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.…”