我们由冷前进和冷压缩过程使 AZ31 镁合金变形了,并且在退火的过程期间调查了他们的静态的再结晶动力学。结果证明在退火的时间和水晶谷物的部分之间的关系能被 Johnson-Mehl-Avrami-Kolmogorov (JMAK ) 方程描述。基于动力学分析,我们计算了由冷前进和冷压缩的再结晶的激活精力分别地是大约 53.5 kJ/mol 和 85.0 kJ/mol。因为后者有高率的变丑,冷压缩过程的激活精力比冷前进过程的高,它在变丑期间引起了更多的精力存储。
We deformed AZ31 magnesium alloys by cold forging and cold compression process, and investigated their static recrystallization kinetics during the annealing process. The results demonstrate that the relationship between the annealing time and the fraction of recrystal grains can be described by the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation. Based on the kinetics analysis, we calculated that the activation energy of recrystallization by cold forging and cold compression were about 53.5 kJ/mol and 85.0 kJ/mol, respectively. The activation energy of cold compression process was higher than that of the cold forging process because the latter had high-rate deformation, which caused more energy storage during deformation.