在Gleeble 15 0 0热模拟机上采用双道次热变形软化法 ,建立了 5 182铝合金热轧再结晶数学模型。对该模型的分析发现 ,再结晶百分数对应变速率非常敏感 ,在一定的变形温度条件下 ,当应变速率 ε 1s-1时再结晶完成所需的时间相当短暂。此外 ,还运用再结晶百分数 保温时间 变形温度 (R t T)的关系曲线 ,提出了铝合金热轧过程显微组织演变的控制轧制技术 ,即在现有的可逆式热轧机上 ,通过控制最后道次的轧制温度、轧制速度和卷取前的冷却速度 ,可以获得所需显微组织的热轧产品 A mathematical model of hot rolling recrystallization of 5 182 aluminum alloy was established on the Gleeble 15 0 0 thermal simulator by double pass hot deformation softening method. Analysis of this model shows that the percentage of recrystallization is very sensitive to strain rate and the time required for recrystallization to finish is quite short at a strain rate of ε 1s -1 at a given deformation temperature. In addition, the control rolling technology of the microstructure evolution during the hot rolling of aluminum alloy was put forward by using the relationship curve of the recrystallization percentage holding time (R t T). In the existing reversing hot rolling mill, The final pass rolling temperature, the rolling speed and the coiling speed before coiling can obtain the hot-rolled product of the desired microstructure