RE-Ca对ZG35CrMo铸钢塑韧性的影响  

Effect of RE-Ca on Plasticity-Toughness of Cast Steel ZG35CrMo

作　　者：秦紫瑞[1] 魏广升[1] 郭宁[1] 钟蕊 王家宝 尹大伟 

机构地区：[1]大连理工大学,大连116023 [2]大连起重机厂

出　　处：《特殊钢》1998年第6期15-17,共3页Special Steel

摘　　要：用光学、电子显微镜、X－射线衍射和电子探针做区分析研究了ZG35CrMO铸钢的显微组织、非金属夹杂物和断口形貌。试验结果表明，ZG35CrMo铸钢经适量RE－Ca处理，可消除魏氏组织，细化晶粒，钢中夹杂物由多角状变为球状，其数量减少，分布均匀，明显提高了铸钢的塑韧性和强度。The mierostructure , non-metallic inclusion and fracture morphology of cast steel ZG35CrMo has been studied using optical and scanning electron microscope (SEM), X-ray diffraction and electron micdroprobe analysis technique. The test results showed that with adding moderate RE-Ca in cast steel ZG35CrMo, the Widmannstatten structure in steel was elithenated, the grains of cast steel were refined and the non-metallic inclusions maied from polygon to spheroid, of which theamount decreased and the distribution was homogeneous, as a result the plasticity-toughness of the cast steel increased obviously.

关 键 词：铸造 低合金钢 RE-Ca处理 塑韧性 铸钢 

分 类 号：TG142.12[一般工业技术—材料科学与工程]