蠕虫状石墨铸铁是一种新的铸铁材料,其石墨形态介于片状和球状之间。在普通金相显微镜下观察,蠕虫状石墨组织由尖端钝化、互不连接的厚片状石墨所构成(见图1)。在扫描电子显微镜下观察深腐蚀试样,可以看出蠕数状石墨在其晶体内互相连接成枝状结构,是一个很复杂的带有很多枝叉的组合体,其形状犹如珊瑚(见图2)。蠕虫状石墨铸铁因其石墨形态的特性,使 Worm-like graphite cast iron is a new cast iron material with a graphite morphology between lamellar and spherical. Observed under a common optical microscope, vermicular graphite tissue is composed of thick, flaky graphite that is tip-passivated and disconnected from each other (see Fig. 1). Observation of deep-etched specimens under a scanning electron microscope reveals that creeping graphite is interconnected into a dendritic structure within its crystal and is a complex combination of many branches, shaped like a coral 2). Worm-shaped graphite cast iron because of its characteristics of graphite form