论文部分内容阅读
基于等效位错密度建立GH4169高温合金的本构方程及微观组织演变模型,通过遗传算法结合热模拟压缩实验结果对模型参数进行求解;对有限元模拟软件DEFORM-3D进行二次开发,模拟工件的镦粗成形,得到了工件平均晶粒尺寸和再结晶百分数的分布情况,并与实验结果进行了对比分析。结果表明,二次开发的软件对微观组织演变的模拟结果与实验结果的平均误差在10%左右,验证了GH4169合金本构方程和微观组织演变模型的准确性,以及对软件二次开发的可行性。
Based on the equivalent dislocation density, the constitutive equation and microstructure evolution model of GH4169 superalloy were established, and the model parameters were solved by genetic algorithm combined with thermal simulation and compression test results. The finite element simulation software DEFORM-3D was re-developed to simulate the workpiece Of the upsetting, the workpiece average grain size and the distribution of recrystallization percentage, and the experimental results were compared. The results show that the average error between simulation results and experimental results of the secondarily developed software is about 10%, which verifies the accuracy of GH4169 alloy constitutive equation and microstructure evolution model and the feasibility of software secondary development Sex.