超高碳球墨铸钢热疲劳性能研究  

Study on the Thermal Fatigue Property of Super High Carbon Cast Steel with Spheroidal Graphite

作　　者：胡志华[1] 栾道成[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039

出　　处：《铸造技术》2006年第2期153-155,共3页Foundry Technology

摘　　要：研究了新型耐磨耐热材料———球墨铸钢。通过对钢液进行适当的球化处理,铸态组织直接获得一定数量的球状石墨、碳化物和珠光体,并有效地降低了有害杂质的含量。重点研究了球墨铸钢的热疲劳性能。研究表明:球墨铸钢的耐热性能优于传统铸钢与锻钢40 Cr。The new type of wear-resisting and heat-resisting cast steel with spheroidal graphite was studied. By means of appropriate nodularizing treatment on the liquid of steel, a certain amount of spheroidal graphites, carbides and pearlites can be obtained in the final as-cast structure and the content of harmful impurity reduce effectively as well The thermal fatigue property of the spheroidal graphite cast steel was investigated emphatically in this paper. The results show that the spheroidal graphite cast steel has the excellent thermal fatigue property, and thus has a highly applied value in industry.

关 键 词：球墨铸钢 球化处理 热疲劳 球状石墨 

分 类 号：TG113.2[金属学及工艺—物理冶金]