复合孕育剂对WD615气缸体组织和性能的影响  

Effect of Compound Inoculants on the Microstructure and Performance of WD615 Engine Cylinder Block

作　　者：张杰[1,2] 许景锋 谢瑞财[2] 张敏之 

机构地区：[1]山东大学材料科学与工程学院,山东济南250100 [2]潍柴动力股份有限公司,山东潍坊261001

出　　处：《铸造设备与工艺》2010年第3期43-44,共2页Foundry Equipment & Technology

摘　　要：利用金相显微镜、拉伸试验机分析了含ReCrMnSi的复合孕育剂对WD615气缸体组织和抗拉强度的影响。结果表明,加入0.20%～0.40%的含ReCrMnSi孕育剂可以明显改善WD615气缸体的孕育效果,能够获得均匀分布的A型片状石墨,同时细化珠光体组织,但对共晶团数量和基体组织没有明显影响,铸件性能明显提高,抗拉强度达到280MPa～310MPa。The effects of compound inoculants containing ReCrMnSi on the microstructure and performance of WD615 engine cylinder block were investigated by using optical microscopy（OM）and tensile testing machine.The experiment results show that,the addition of 0.20%～0.40% compound inoculants for gray cast iron cylinder block promotes the formation of A type flake like graphite in the alloy,and the morphology of pearlite was refined too,however,the eutectic structure and matrix were not affected.With the addition of compound inoculants,performance of cylinder block is improved,and tensile strength increases to 280MPa～310MPa.

关 键 词：复合孕育剂 金相组织 性能 气缸体 

分 类 号：TK406[动力工程及工程热物理—动力机械及工程]