Abstract In the present study the kinetics of recrystallization phenomenon of hot-rolled Mg-1.33La (wt.%) alloy was investigated using differential scanning calorimetry (DSC) analysis. The alloy was hot-rolled at 693 K to 20 and 50 % of thickness reduction. The DSC experiments results showed that the peak of recrystallization process ranged from 441.9 ± 2.0–497.8 ± 4.0 K and increased with increasing heating rate. The activation energy evaluated through the non-isothermal DSC treatment ranged from 93.3 ± 2.1–116.6 ± 2.6 kJ mol−1 and correlates well with the increase of stored energy during the deformation processing. The Avrami exponent of recrystallization was found close to 0.6 which indicates that the recrystallization preferentially occurred along grain boundaries and within deformation features such as twins.

中文翻译：

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使用差示扫描量热技术研究热轧 Mg-La 合金的再结晶动力学

摘要 本研究采用差示扫描量热法 (DSC) 分析热轧 Mg-1.33La (wt.%) 合金的再结晶动力学。该合金在 693 K 下热轧至 20 和 50% 的厚度减少。DSC实验结果表明，再结晶过程的峰值范围为441.9±2.0-497.8±4.0 K，并随着加热速率的增加而增加。通过非等温 DSC 处理评估的活化能范围为 93.3 ± 2.1–116.6 ± 2.6 kJ mol-1 并且与变形加工过程中储存能量的增加有很好的相关性。发现再结晶的 Avrami 指数接近 0.6，这表明再结晶优先沿晶界和变形特征（如孪晶）发生。