|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Magnesium Technology 2018
||C-79: Understanding of Dynamic Recrystallization Characteristics of ZEK100 Magnesium Alloy Sheet during Warm Forming
||Jing Su, Yang Liu, Timothy Skszek, Stephen Yue
|On-Site Speaker (Planned)
Mg ZEK100 (Mg-1Zn-0.2Nd-0.2Zr, wt.%) alloy has shown promising formability, which is mainly due to the activation of non-basal slip systems and the formation of the unique basal texture during thermomechanical processing. The car door panel of ZEK100 has been successfully fabricated by hot pressing at 250°C. In the present study, the ZEK100 alloy sheet was subjected to annealing at various temperatures to study static recrystallization (SRX) behavior and texture evolution. Warm tensile testing was conducted at 250°C at three different strain rates (0.1/s, 0.01/s, and 0.001/s) to understand dynamic recrystallization (DRX) mechanisms and flow behavior. The as-rolled sheet resisted to SRX after annealing at 250°C for 2 h. However, during tensile testing at 250°C, flow softening occurred at all three strain rates, which was initially due to the progress of DRX and to the occurrence of necking at larger strains. Effect of the local strain on triggering DRX was studied.