摘要
利用Gleeble-3500热模拟试验机对HRB500E的冷却过程进行研究。结果表明,HRB500E的相转变温度受冷却工艺的控制。试样组织随转变温度的变化而变化。随突变温度的降低和冷却速度的提高,组织中贝氏体含量上升。在相同工艺条件下,随吐丝温度的提高,贝氏体含量增加。通过控制冷却工艺可对其相转变温度进行调控,进而改变室温组织以改善材料的性能。
Gleeble-3500 thermal simulation test machine was used to analyze the cooling process of HRB500E. The results show that the phase inversion temperature of HRB500E is controlled by cooling process. The microstructure of the test steel changes with phase inversion temperature changing. With the decrease of mutational temperature and increase of cooling rate, the content of bainite in microstructure increases. Under the same conditions,the content of bainite increases with the increase of spinning temperature. The phase inversion temperature can be controlled by controlling cooling process, and then, the change ofmicrostructure of HRB500E at room temperature can improve the performance of material.
出处
《热加工工艺》
CSCD
北大核心
2016年第14期85-88,共4页
Hot Working Technology
