由于一号合金的应用,球墨铸铁的石墨形状比镁球墨铸铁有所改变,故有必要将镁球墨铸铁评定的金相图谱加以适当修改,方能满足生产上的发展需要。一号合金镁处理的球墨铸铁,在球化率相同的条件下,其性能有优于镁球墨铸铁的倾向。 Due to the application of alloy No. 1, the graphite shape of ductile iron is changed from that of magnesium ductile iron, so it is necessary to modify the metallographic pattern of magnesium ductile iron to meet the development needs in production. No. 1 alloy magnesium-treated ductile iron, nodular cast iron in the same conditions, its performance is better than the ductile iron magnesium tendencies.