基于有限元软件ANSYS Mechanical对ZTA陶瓷颗粒增强高铬铸铁基复合材料(HCCI/ZTAP)的铸造过程的热应力进行了数值模拟。运用热弹塑性模型准确描述了铸造过程中的热应力,对比了预制体中不同形状的孔所产生的热应力,预测了热裂等缺陷。结果表明,随着孔的边数增加,热应力逐渐减小。模型可以很好地预测裂纹等缺陷。 Based on the finite element software ANSYS Mechanical, the thermal stress of the ZTA ceramic particle reinforced high chromium cast iron matrix composite (HCCI / ZTAP) during the casting process was numerically simulated. The thermal elastic-plastic model is used to describe the thermal stress in the casting process accurately. The thermal stress caused by different shapes of holes in the preform is compared and the defects such as thermal cracking are predicted. The results show that as the number of holes increases, the thermal stress decreases gradually. The model can predict defects such as cracks well.