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用FeSi颗粒孕育处理少量铁水,随后液淬以中止其溶解过程,固定其液态下的组织,在FeSi颗粒周围形成了碳化硅晶体和各种形态的石墨质点,这些新生相存在的时间很短,当FeSi颗粒完全溶解之后,也随之消失,但是,遗留下的局部高碳高硅区却能维持相当长的时间。碳和硅的浓度不均,或碳的高活度区的存在,为石墨的成核提供条件,这就是孕育现象的真缔。孕育现象并不与任何特定的晶核相联系。孕育的衰退是由于浓度不均随时间逐渐消失而来,衰退问题是个扩散问题。
FeSi particles inoculated with a small amount of hot metal treatment, followed by liquid quenching to stop the process of dissolution, the liquid under the fixed organization in the formation of silicon particles around the FeSi particles and various forms of graphite particles, the existence of these new phase is very short, When the FeSi particles are completely dissolved, they disappear. However, the remaining high-carbon and high-silicon regions remain for a long time. The uneven concentration of carbon and silicon, or the presence of high activity zones of carbon, provides the conditions for the nucleation of graphite, which is the true cause of ingenuity. Inconsistency does not relate to any particular nucleus. The recession that nurtured is due to the gradual disappearance of the concentration over time, and the recession is a proliferation issue.