用Gleeble-3500热模拟试验机研究了两种不同铌含量低碳微合金钢热形变奥氏体的静态再结晶。不同参数的平面应变双道次压缩试验结果表明,铌通过在钢中固溶或析出第二相粒子可以有效地抑制奥氏体变形及静态再结晶。而且道次间隔时间越长,铌对形变奥氏体静态再结晶抑制作用越明显。 The static recrystallization of hot deformed austenite of two different niobium-containing low-carbon micro-alloyed steels was investigated by Gleeble-3500 thermal simulator. The results of plane strain two-pass tests with different parameters show that niobium can effectively suppress austenite deformation and static recrystallization by solid solution or precipitation of second phase particles in steel. Moreover, the longer the interval, the more obvious the inhibition effect of niobium on the static recrystallization of deformed austenite.