本文对 ZG1Cr18Ni9Ti 试样采用泡沫陶瓷过滤器过滤处理后,在扫描电镜中进行拉伸试验,观察了材料断裂的微观过程,同时对未经过滤处理的试样进行了同样试验。得到的结果表明,试样中夹杂物大小、分布不同,裂纹的生核和长大方式有所区别,从机理上揭示了过滤提高ZG1Cr18Ni9Ti 韧性的原因。 In this paper, the sample of ZG1Cr18Ni9Ti was filtered through a ceramic foam filter and then subjected to tensile test in a scanning electron microscope to observe the microscopic process of material fracture. Meanwhile, the same test was performed on the sample without filtration. The obtained results show that the sizes, distributions of inclusions in samples are different, and the nucleation and growth modes of the cracks are different, and the reason why the filtration increases the toughness of ZG1Cr18Ni9Ti is revealed from the mechanism.