中文摘要：

开发了一种铸锻联合成形工艺的协同仿真技术。采用ProCAST软件的CAFE模块进行铸造模拟,获得初始不均匀的铸态晶粒尺寸。编译了一组Fortran程序作为Deform-3D软件的功能模块,用以建立初始不均匀铸态晶粒尺寸的分布与Deform-3D锻造模型之间的耦合。通过对Deform-3D的二次开发,实现了锻造过程中微观组织演变的数值模拟。最终实现了对动态再结晶晶粒尺寸和动态再结晶体积分数的预测。采用开发的协同仿真技术对截齿齿体的铸锻联合成形工艺进行了数值模拟分析。模型分别采用了初始均匀的晶粒尺寸和由铸造模拟获得的初始不均匀的晶粒尺寸,获得了两种模型的动态再结晶晶粒尺寸和动态再结晶体积分数的分布。通过对比分析,证明了铸锻联合成形工艺晶粒分布预测协同仿真技术的可行性。

英文摘要：

A co-simulation technology of casting-forging combination forming process was developed. Initial nonuniform cas- ting grain size was obtained from CAFE module of ProCAST software by casting simulation. A Fortran program was compiled as a function module of Deform-3D software to establish the coupling between the initial nonuniform casting grain size distribution and the Deform-3D forging model. The simulation of mierostructure evolution during the forging process was realized though the secondary development of Deform-3D software. Finally, the distribution of dynamic recrystallized grain size and dynamic recrystallization vo- lume fraction could be predicted. The casting-forging combination forming of the cutting pick body was simulated by the developed co-simulation technology. The distribution of dynamic recrystallized grain size and dynamic recrystallization volume fraction of the two models, one model with initial uniform grain size, another with initial nonuniform grain size form the casting simulation, were acquired respectively. The feasibility of co-simulation technology of casting forging combination forming process for grain distribution orediction was proved by the comparison result analysis.