【摘要】 根据热冲压成形的工艺特点,分析热冲压成形过程中的组织转变过程,并选择了热冲压成形的组织转变模型。利用ABAQUS后处理二次开发,预测高强钢热冲压盒形件中马氏体的体积分数。通过热冲压试验和数值模拟,研究了压边力对热冲压盒形件微观组织的影响规律,并由热冲压盒形件的金相分析进行验证,试验结果与模拟结果基本吻合,证明所选模型对预测热冲压成形件的组织可行,而且有效。更多还原

【Abstract】 According to the characteristic of hot-stamping process,the process of microstructure transformation was analyzed,and then the model of microstructure transformation in the hot-stamping process was chosen.The volume fraction of martensite was predicted in AHSS hot-stamping process by the secondary development of ABAQUS post-process.Besides,the effect of Blank Holder Force(BHF) on the microstructure of hot-stamping square-cup part was studied through the hot-stamping experiments and numerical simulation.Then the metallographic analysis of hot-stamping parts was carried out to verify the results of the numerical simulation.The results of experiments and numerical simulation agreed well,which indicated that using the model to predict microstructures of hot-stamping parts was feasible and effective.更多还原