Abstract:The current study investigates the effect of the timing of the addition of ferrosilicon with Al and Ca impurities on the inclusion evolution during the refining process of Al‐killed gear steel SCr420H. To achieve this aim, laboratory experiments and thermodynamic calculations are conducted. The process sample, the ingot sample, and ferrosilicon are polished and analyzed by scanning electron microscope‐energy dispersive spectrometer. The results show that Ca and Al impurities mainly exist as intermetallic compo… Show more
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