In this study, the recrystallization process in deformed high-purity aluminum was investigated by using the internal friction (IF) and hardness measurement. In the heating process, two IF peaks were detected when the heating rate is 2 °C/min: a sharp peak (P₁ peak) at ~139 °C and a wide peak (P₂ peak) at ~278 °C (0.5 Hz). In the subsequent cooling process, the P₁ peak disappears while the P₂ peak remains. The P₂ peak shifted towards higher temperatures with increasing frequency and can be ascribed to grain boundary relaxation. For the P₁ peak, however, its position did not change with increasing frequency but shifted towards higher temperatures with increasing heating rate in the range of 1–5 °C/min, and the corresponding modulus varied abnormally in the temperature range of 115–160 °C. These facts indicated that the P₁ peak is a non-relaxational peak and can be ascribed to the recrystallization process. The recrystallization activation energy deduced via the shift of peak position with heating rate by using the Kissinger equation is 57± 3 kJ/mol, which is as same as that deduced from the classical isothermal recrystallization process as assessed by microhardness measurement. The classical isothermal recrystallization temperature can be deduced from the peak temperature of P₁ peak by simply adjusting the heating rate. This provided a method to determine the recrystallization temperature via internal friction measurement in a continuously heating process, which needs only two or three samples.

在这项研究中，通过使用内摩擦 (IF) 和硬度测量来研究变形高纯铝的再结晶过程。的尖锐峰（：在加热过程中，两个IF被当加热速率为2℃/分钟检测到的峰P _1周的峰）在〜139℃和宽峰（P ₂的峰）在〜278℃（0.5赫兹）。在随后的冷却过程中，P ₁峰消失而P ₂峰保留。的P ₂峰值朝着更高的温度偏移的次数越来越多，并可以归因于晶界松弛。对于P ₁然而，它的位置没有随着频率的增加而改变，而是随着加热速率在 1-5°C/min 范围内的增加而向更高的温度移动，并且相应的模量在 115-160°C 的温度范围内异常变化。这些事实表明，P ₁峰是一个非弛豫峰，可以归因于再结晶过程。使用 Kissinger 方程通过峰位置随加热速率的移动推导出的再结晶活化能为 57±3 kJ/mol，这与通过显微硬度测量评估的经典等温再结晶过程推导出的相同。经典的等温再结晶温度可以从P ₁的峰值温度推导出来只需调整加热速率即可达到峰值。这提供了一种在连续加热过程中通过内摩擦测量确定再结晶温度的方法，该方法只需要两个或三个样品。