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研究了脉冲电流对过共晶Fe-C-B合金凝固组织初生相的影响。结果表明,脉冲电流影响过共晶Fe-C-B合金中初生硼化物的形核过程,提高硼化物晶核的形成温度,使过共晶Fe-C-B合金中的初生硼化物提前形核,细化初生硼化物,但不能明显增加硼化物晶核数。在相同的热历程下,脉冲电流不改变试样凝固组织物相组成。
The effects of pulse current on the primary phase of the solidified microstructure of hypereutectic Fe-C-B alloy were investigated. The results show that the pulse current affects the nucleation process of the primary boride in the hypereutectic Fe-CB alloy, increases the formation temperature of the boride nucleus, premature nucleation and refinement of the primary boride in the hypereutectic Fe-CB alloy Primary boride, but not significantly increase the number of boride nuclei. Under the same thermal history, the pulse current does not change the phase composition of the solidified microstructure of the sample.