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。
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 microstrueture of hovstamping 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.
出处
《塑性工程学报》
CAS
CSCD
北大核心
2012年第6期40-44,共5页
Journal of Plasticity Engineering
关键词
高强钢
热冲压
盒形件
压边力
组织预测
high strength steel
hot stamping
square-cup part
BHF
microstructure prediction
