GPa压力处理对低合金钢冷却过程中固态相变动力学的影响.PDF

下半月出版 Material Heat Treatment 料热处理技术 5GPa 压力处理对低合金钢冷却过程中固态 相变动力学的影响 于昆 (秦皇岛职业技术学院 机电工程系, 河北秦皇岛066 100) 摘 要 通过对低合金钢经5 GPa 压力处理前后在冷却过程中固体相变温度尧相变时间和相变激活能的测试与计 算 探讨了低合金钢经5 GPa 压力处理后对其在冷却过程中固体相变动力学的影响遥 结果表明院5 GPa 压力处理能提 低合金钢组织中奥氏体向珠光体的转变温度和转变激活能 缩短转变时间 有利于低合金钢在冷却过程中的固态相变遥 关键词 低合金钢曰 固态相变曰5 GPa 压力 中图分类号 TG156.99 文献标识码 A 文章编号 Effect of 5GPa Pressure Treatment on Solid-state Phase Transformation Kinetics in Low Alloy Steel During Cooling Process YU Kun (Departme nt of Elec tromechanical Engineering, Qinhuangdao V ocational Technological College, Qinhuangdao 066 100, China) Abstract 院The effects of 5 GPa pressure treatment on the solid state phase transformation kinetic parameters of low alloy steel in following cooling process were investigated, based on the measurement and calculation of its solid state phase transformation temperature, duration and activation energy. The results show that the transformation temperature and activation energy of austenite to pearlite in low alloy steel after 5 GPa pressure treatment can be increased as well as the phase transformation time can be also decreased, and which is helpful for the solid-state phase transformation in low alloy steel during cooling process. Key words 院low alloy steel; solid-state phase transformation; 5 GPa pressure 压对合金的凝固过程有重要的影响 可使合 的方法是压力5 GPa 加热到950 保温 10 min 然