Texture weakening of AZ31 magnesium alloy sheet obtained by a combination of bidirectional cyclic bending at low temperature and static recrystallization

Microstructure and Mechanical Property of Mg-3Al-1Zn Magnesium Alloy Sheet Processed by Integrated High Temperature Rolling and Continuous Bending

“…Moreover, for the HTR-CB sheet underwent annealing, the grain size near the upper surface is similar with that in the mid-layer, which is different with the results in BCB AZ31 alloy sheet [22]. It has been reported that after BCB and annealing, the remarkably gradient structure is observed, i.e., until fine grains are near the surfaces and coarse grains are in the mid-layer [22], which is mainly due to the fact that the sheet underwent BCB, and the plastic strain is mostly focused near the upper and lower surfaces, but the strain in the central is very small, which leads to that the driving force of SRX near the surfaces is much higher than that in the central during the subsequent annealing. However, as mentioned above, the sheet can be subjected to a compression stress along the RD during HTR-CB process, which leads to that a lot of twins can be produced in the mid layer of the sheet (Figure 2d 1 ,d 2 ).…”

Magnesium alloys: a review of applications

“…For enhancing mechanical properties many commercial wrought Mg alloy systems have been developed, like the AZ, ZK and WE system. 33,34 In China they are forming a large-scale industry to manufacture Mg alloy sheets in mass production. From previous research they are developing Mg alloy strengths and a new alloy system, and they are making, strengthening the grain refinement, precipitation and texture effects.…”

Microstructural and textural evolution of AZ61 magnesium alloy sheet during bidirectional cyclic bending

“…Thus, our present work shows a more superior control on the texture, which can accomplish larger Schmid factors for basal slip. Besides, the new DRX grains and the special processing method accelerate texture weakening effectively [10,17]. Since there are still very few literatures reporting the effect of kink bands on the texture changes, the specific mechanisms are not very clear yet.…”

“…Consequently, the improvement of the ductility is restrained. In our previous work, Huo et al [17] obtained fine grains and weakened texture in the regions near two surfaces by using bidirectional cyclic bending at low temperature followed by annealing. However, the effect of bidirectional cyclic bending at relatively high temperature is unknown.…”