As the eutectic time increases, the graphite morphology departs from sphericity to the abnormal morphology, and the roundness of the graphite particles decreases as well.

• 随着共晶时间的延长，铸件的石墨形态逐渐偏离球形，向异常化趋势发展，石墨颗粒的圆整度随之降低。