中文摘要：

微观结构进化的预言在伪造过程的设计起一个重要作用。在现在的工作，细胞的自动机(CA ) 节目被开发为铝合金 7050 模仿动态再结晶(DRX ) 的过程。包括脱臼密度，成核率和谷物生长，在 CA 模型的材料常数被等温的 compress 测试在 Gleeble 1500 机器上决定。脱臼密度的模型被线性回归方法基于试验性的结果获得。为铝合金 7050 的 DRX 和吝啬的谷物尺寸的百分比上的变丑参数的影响借助于 CA 模拟在细节被调查。模拟结果显示出那，当温度以 DRX 的百分比也极大地增加的 0.01 s ⁻¹, 的紧张率从 350 ～ 450 ° C 增加，吝啬的谷物尺寸从 50 ～ 39.3 μm 减少。recrystallied 谷物(R 谷物) 的吝啬的尺寸主要取决于 Zener-Hollomon 参数。获得好谷物，需要的变丑温度从 400 ～ 450 ° C 被决定。

英文摘要：

The prediction of microstructure evolution plays an important role in the design of forging process. In the present work, the cellular automaton （CA） program was developed to simulate the process of dynamic recrystallization （DRX） for aluminium alloy 7050. The material constants in CA models, including dislocation density, nucleation rate and grain growth, were determined by the isothermal compress tests on Gleeble 1500 machine. The model of dislocation density was obtained by linear regression method based on the experimental results. The influences of the deformation parameters on the percentage of DRX and the mean grain size for aluminium alloy 7050 were investigated in details by means of CA simulation. The simulation results show that, as temperature increases from 350 to 450 ℃ at a strain rate of 0.01 s^-1, the percentage of DRX also increases greatly and the mean grain size decreases from 50 to 39.3 μm. The mean size of the recrystallied grains （R-grains） mainly depends on the Zener-Hollomon parameter To obtain fine grain, the desired deformation temperature is determined from 400 to 450 ℃.