Si/C比变化对高碳当量灰铸铁组织性能的影响  

The Changes of Si/C on the Microstructure and Mechanical Properties of High CE Gray Cast Iron

作　　者：陈队志[1] 王昕[1] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《兰州铁道学院学报》2003年第6期113-115,126,共4页Journal of Lanzhou Railway University

摘　　要：研究了Si/C比对含V、Ti高碳当量(4.10%～4.25%)灰铸铁组织性能的影响.结果表明,随Si/C比提高,铸铁显微组织中珠光体和D、E型石墨逐渐减少;Si/C比从0.38～0.45提高到0.60～0.76,可以使铸铁抗拉强度提高9～26MPa,硬度提高0～13HB;合适的Si/C比是在0.60～0.76范围内.In this paper,the changes of Si/C on the microstructure and mechanical properties of high CE((4.1%)～4.25%) gray cast iron containing V and Ti are studied.The results show that the quantity of pearlite,D and E-type graphite reduced by degrees in the microstructure of gray cast iron with Si/C;the Si/C of gray cast iron raises from 0.38～0.45 to 0.6～0.76,the tensile strength increases by 9～26 MPa and the hardness by 0 ～13 HB.The range of proper Si/C is 0.60～0.76.

关 键 词：SI/C比 高碳当量 灰铸铁 组织性能 显微组织 珠光体 抗拉强度 

分 类 号：TG143.2[一般工业技术—材料科学与工程]