Deformation Behavior of AZ31 Magnesium Alloy During Tension at Moderate Temperatures

The mechanical properties and deformation mechanisms have been studied by tension testing at temperatures between 373 and 523 K and at strain rates ranging from 10−1 to 10−3 s−1. The experimental results show that the plasticity improves significantly with temperature and decreases obviously with increasing strain rate. When the temperature is below the recrystallization temperature, twinning and dislocation slip have been proven to be the dominant model of plastic deformation. With the temperature increasing, some DRXed grains can be observed at the twinned regions and grain boundaries, suggesting that both twinning-induced DRX and continuous DRX occurred in the deformation process.