短时加热条件下TC4合金β相长大动力学研究

Study on Kinetics of β Phase Grain Growth of TC4 Alloy under Short Time Heating

通过Image-pro plus图像分析软件定量分析不同热处理温度和时间下的TC4合金β相含量和尺寸,获得了晶粒生长时间指数n和长大激活能Q。结果表明:随着加热温度和时间的增加,晶粒尺寸增大;β相生长时间指数n随温度的升高先增大后减小,长大激活能Q为95.28 kJ/mol。

Theβphase content and size of TC4 alloy under different heat treatment temperatures and time were quantitatively analyzed by Image-pro plus image analysis software.The grain growth time exponent n and the growth activation energy Q were obtained.The results show that,the grain size increases with the increase of heating temperature and time.The growth time exponent n ofβphase first increases then decreases with the increase of temperature,and the activation energy Q is 95.28 kJ/mol.