在高倍（１０００００～３２００００×）观察图象时发现，在稀土镁球墨铸铁组织中有许多超显微结构。超显微结构在放大３２００００倍条件下才能观察到类似珠光体的片层结构；碳化物出现单层或多层结构；Ｃｅ２Ｃ在固溶体中析出使球铁拉伸强度提高。除形貌观察外，还对某些组织及组织组成物（相），应用选区电子衍射（ＳＡＥＤ）技术进行了物相结构标定〔 In high magnification (100000 ~ 320000 ×) observed images, found in the rare earth magnesium nodular cast iron microstructure has many super-microstructure. The microstructure of the microstructure is similar to that of the pearlite under the conditions of magnification of 320,000 times. The single or multi-layer structure of the carbide appears. The precipitation of Ce2C in the solid solution enhances the tensile strength of the ductile iron. In addition to morphology observation, but also some of the organization and tissue composition (phase), the application of selected area electron diffraction (SAED) technology phase structure calibration [