Static Recrystallization of Magnesium Alloy during TRC-HC Deformation Followed by Annealing

Abstract

Using optical microscopy, electron backscatter diffraction and transmission electron microscopy, the static recrystallization (SRX) mechanisms of ZK 60 magnesium alloy was examined under twin-roll-cast and hot compression (TRC-HC, 350 °C/0.1 s-1) and subsequent annealing (1000 second at 250-400°C). The static recrystallization (SRX) mechanisms, such as grain boundary migration (GBM), grain boundary bulging (GLB) and subgrain rotation (SGR), were discussed.

Microstructure and Texture Evolution during Twin-Roll Casting and Annealing of a Mg–6.8Y2.5Zn–0.4Zr Alloy (WZ73)

“…It was assumed that due to static recrystallization, sub-grain formation occurred first before the subsequent migration of sub-grain boundaries. These low-angle grain boundaries were further transformed into high-angle grain boundaries-as described by Wang et al [40] during twin-roll casting and annealing of a ZK60 magnesium alloy.…”

Analysis of Solid-Liquid Transition in Az31 Magnesium Alloy in TRC Process Using Thermocouples and Offline Digital-Twin

“…The advantage of the continuous casting process is the combination of solidification and forming in one process step, which results in a formed casting structure [1]. This favours the subsequent behavior of the SRX (explain SRX) and thus the mechanical properties during further rolling [2][3][4][5][6]. However, due to the very large number of input variables in the process, it is very sensitive to fluctuations in the individual output variables.…”