】研究低碳球墨铸铁中珠光体的形貌特征，试验结果表明，由于受到ＳＸ变质剂中表面活性元素的影响，形貌上呈现位相多变；珠光体片间距大小、厚薄、宽窄不均的特点。珠光体的形核方式、形核位置、生长方式等均与碳钢中的珠光体有很大差异 】 The morphology of pearlite in low-carbon ductile iron was studied. The experimental results show that due to the influence of the surface active elements in the SX modifier, the morphologies of the pearlite appear as phase change. The pearlite interlacing distance, size, width and width Features. The pearlite nucleation mode, nucleation sites, growth mode and so on are all very different from the pearlite in carbon steel