Melted cast iron was inoculated by FeSi,then quenched to interrupt the dissolution,the non-metallic inclusions,in which the graphite phase was already occured,formed inthe dissolution region,They dissolved into the melt soon,but the inclusions coated bygraphite could exist for along time.The function of inoculant is to create an undercoolingsolution for carbon,thereby the non-metallic inclusions in the solution may be activatedas the nuclei for graphite.
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