High-Speed Rolling of AZ31 Magnesium Alloy Having Different Initial Textures

RETRACTED: Effect of Final Rolling Temperature on Microstructures and Mechanical Properties of AZ31 Alloy Sheets Prepared by Equal Channel Angular Rolling and Continuous Bending

“…To date, many plastic deformation technologies have been developed to tailor the texture of wrought magnesium alloy sheets for improving their formability at room temperature [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. For instance, Suh et al [ 11 ] revealed that the cold formability of AZ31 Mg alloy sheets could be enhanced by weakening the basal texture of rolled AZ31 Mg alloy sheets using equal channel angular pressing (ECAP).…”

Effect of the final rolling speeds on the stretch formability of AZ31 alloy sheet rolled at a high temperature

“…However, the poor ductility and sheet formability at ambient temperatures due to the hexagonal closepacked structure of Mg alloys presents a serious problem [2]. Nowadays, many researchers have focused on the improvement of the tensile ductility of the Mg alloy sheets at ambient temperatures by means of grain refinement and texture control through differential speed rolling (DSR) [3], large strain rolling (LSR) [4], HighSpeed Rolling (HSR) [5], high strain rate rolling (HSRR) [6], cross rolling (CR) [7] et al But the Mg alloy sheets are generally rolled at the temperatures lower than 500 C in these methods to obtain fine-grained structures, so weakening the basal texture is limited. It has been reported that the influence of the texture on the stretch formability of the Mg sheets at room temperature is more significant than that of grain size [8].…”

“…Moreover, rolling speed is another important factor in rolling process. It was reported that the microstructure, texture and mechanical property of Mg alloy sheets also could be improved by increasing rolling speed [5]. Guo et al [13] suggested that for the LSR AZ31 Mg alloy sheets, twinning dominated the deformation at lower rolling speed, while the remarkable dynamic recrystallization (DRX) was extended at high rolling speed, so increasing rolling speed was beneficial to the refinement of the grains and improvement of the tensile ductility of the sheet.…”

Anomalous Twinning as the Macroscopic Deformation Mechanism for AZ31 Magnesium Alloy

“…However, there is no study mentioning that the twinning increases the total elongation. Rather, formation of the shear band including large amount of twinning is frequently reported, which causes the failure of the sample [4][5][6]21]. As shown in Fig.…”

“…Both tension and compression twinning systems, {101 � 2}<1 � 011> and {101 � 1}<101 � 2 � >, respectively, are easily activated and form local strain concentration [2,3]. This results in a formation of shear band and the following failure [4][5][6]. It is generally understood that the "tension" twinning is only activated when the required strain component along c axis, [0001], is positive since it generates positive (tensile) strain along the axis.…”