【摘要】 采用类端淬设备、电导率计、差示热扫描分析仪和透射电镜等并结合数字模拟研究了211Z型铝合金的淬透性能。结果表明:试样在≤40℃水温淬火的过饱和固溶程度、时效后的硬度均高于水温较高(50~60℃)时淬火的相应值,但淬透深度相反;试样时效处理后的硬度值受淬火敏感温度区间(140~380℃)的平均冷却速度影响,超过临界值后,硬度值基本保持不变,小于临界值,则随平均冷却速度的增加而增大。更多还原

【Abstract】 The water quenching hardening property of 211 Z aluminum alloy was investigated by end-quenching instrument,electrical conductivity meter,differential scanning calorimetry,transmission electron microscopy and numerical simulation method.The results show that the supersaturation degree as well as the hardness after aging treatment of samples treated by water quenching below 40 ℃ are higher than those of samples treated by higher temperature(50~60 ℃) water quenching.But,the influence of water temperature on quenching depth is reverse.Hardness of samples after aging treatment is influenced by average cooling rate during quench sensitivity temperature interval(140~380 ℃).When the average cooling rate exceeds a critical value,the hardness remains the maximum and unchanged.However,the hardness increases with the increase of average cooling rate when it is less than the critical value.更多还原