【摘要】 阐述了金属材料塑性加工中微观组织演变数值模拟的重要性。重点介绍了金属热锻过程中材料微观组织演变的机理和数学模型。完成了金属材料热变形过程中再结晶动力学与晶粒长大模型研究,编制用户子程序并嵌入到DEFORM-TM程序中。通过法兰轴的热锻过程中微观组织演变的实例,有效地验证了程序的可行性,对金属热锻过程微观组织预测有一定的指导作用。更多还原

【Abstract】 The importance of numerical simulation of microstructure evolution during metal hot forging was introduced in this paper.The multi-mechanism and mathematic models of microstructure evolution during material hot forging were emphatically described.The study on recrystallization kinetics and grain growth models during material hot forging was accomplished and user subroutines were programmed to be embedded into DEFORM^-TM.Simulations of microstructure evolution for a flange axle hot forging were given,which effectively tested program feasibilities and played a certain role in guiding prediction on numerical simulation of microstructure evolution during metal hot forging.更多还原