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一、前言铸铁是共晶型的 Fe—C—Si 三元合金,通常还含有锰、硫和磷。铸铁组织复杂,结晶相变过程尚未被完全认识,因此铸铁组织的解释现在还是件困难的事。铸铁的各项性能在很大程度上是决定于高碳相的形态和数量,因此高碳相是组织中最重要的一个相,对铸铁的研究也就大都集中在这方面,例如要谈到铸铁的化学成分,就首先要研究它和高碳相的关系,即合金元素的石墨化作用。
I. Introduction Cast iron is a eutectic Fe-C-Si ternary alloy, usually containing manganese, sulfur and phosphorus. The structure of cast iron is complicated and the process of crystal phase transformation has not yet been fully understood. Therefore, the interpretation of cast iron is still a difficult task. The performance of cast iron is largely determined by the morphology and amount of high-carbon phases, so the high-carbon phase is the most important phase in the organization, most of the research on cast iron is also concentrated in this area, for example, to talk about The chemical composition of cast iron, we must first study it and the relationship between the high-carbon phase, that is, alloying elements of graphitization.