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借助Ｘ射线及电子探针等分析手段，对旋转磁场作用下高硅铸铁合金 Ｆｅ－２０％Ｓｉ－０．８％Ｃ的定向凝固组织特性进行了研究。结果表明，先结晶的少 量细小石墨几乎全部分离到试棒的外表面，形成２ｍｍ的富集层，而大量的 ＳＩ则形成铁硅相，且有新相ＦｅＳｉ２生成。
The properties of directional solidification of Fe-20% Si-0.8% C high-silicon cast iron alloy under rotating magnetic field were studied by means of X-ray and electron probe analysis. The results show that a small amount of fine graphite crystallized first almost completely separated from the outer surface of the test bar to form a 2 mm thick layer, while a large number of SI formed an iron-silicon phase and a new phase of FeSi2 was formed.