钒氮微合金钢的动态再结晶数学模型研究  

Research on the Mathematical Modeling for Dynamic Recrystallization of V-N Microalloyed Steel

作　　者：赵宝纯[1] 赵坦[1] 李桂艳[1] 

机构地区：[1]鞍钢股份有限公司技术中心,辽宁鞍山114009

出　　处：《钢铁钒钛》2012年第5期55-59,共5页Iron Steel Vanadium Titanium

摘　　要：利用Gleeble-3800热模拟试验机对含钒微合金钢进行了温度范围为900～1 050℃,应变速率范围为0.1～10 s-1的单道次压缩试验,得到了试验钢的应力-应变曲线。采用回归分析法确定了双曲线本构方程中的材料常数,动态再结晶激活能和临界应变量与Z参数的关系。根据该试验钢发生动态再结晶的条件,建立了其动态再结晶图。Single -pass compressing tests were performed with the Gleeble -3800 thermo-mechanical simulator at the temperature of 900℃ to 1 050 ℃ and strain rate of 0. 1 s^-1 to 10 s^-1 to investigate the dynamic recrystallization behavior of a kind of vanadium- curve was obtained as a result. By the regression analysis the material parameters in the hyperbolic sine constitutive bearing microalloyed steel and the stress-strain of the stress-strain data obtained from the test, equation and the dynamic recrystallization activation energy, including the relationship between the critical strain and parameter Zener-Hollomon, were determined. Based on the conditions for the deformation, the dynamic recrystallization diagram of the tested steel was drawn.

关 键 词：钒微合金钢 动态再结晶 临界应变量 数学模型 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG115.5[金属学及工艺—金属材料]