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.
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