论文部分内容阅读
利用Gleeble1500热模拟机研究了Nb质量分数0.089%的高温热机械轧制钢(4#Nb钢)在粗大奥氏体晶粒条件下的静态再结晶规律.作为对比,同时研究了一种铌质量分数0.049%的低碳含铌钢(2#Nb钢)的静态再结晶规律.实验结果表明:4#Nb钢的静态再结晶动力学过程比2#Nb钢慢,在高温时差异较小;随着形变温度的降低,4#Nb钢的静态再结晶动力学被极大地延迟.根据实验数据建立了静态再结晶模型,该模型对轧制工艺的制定有一定的指导意义.
The static recrystallization rules of high temperature thermo-mechanical rolled steel (4 # Nb steel) with 0.089% Nb mass fraction under coarse austenite grain size were studied by means of Gleeble1500 thermal simulator.As a contrast, a niobium quality The static recrystallization of low carbon niobium steel (2 # Nb steel) with a fraction of 0.049% shows that the static recrystallization kinetics of 4 # Nb steel is slower than that of 2 # Nb steel and the difference is not obvious at high temperature. With the decrease of deformation temperature, the static recrystallization kinetics of 4 # Nb steel is greatly delayed. Based on the experimental data, a static recrystallization model is established. This model has certain guiding significance for the formulation of rolling technology.