发动机缸盖用新型Al-Si-Cu-Mg铝合金材料  

New Al-Si-Cu-Mg Aluminum Alloy Material for Engine Cylinder Head

作　　者：陈大辉[1] 汤进军[1] 邰红岩 贾祥磊[1] 侯立群[1] 张广明[1] 

机构地区：[1]中国兵器工业集团公司第五二研究所,浙江宁波315103 [2]山西柴油机工业有限责任公司,山西大同037036

出　　处：《车用发动机》2011年第6期85-89,共5页Vehicle Engine

摘　　要：新型Al-Si-Cu-Mg铝合金材料在319.0合金的基础上,通过调整合金中Cu,Mg两种元素的含量和添加其他微量元素,同时改善了室温性能和高温性能,力学性能优于传统发动机缸盖铝合金;采用常用方法测试了新型铝合金的铸造性能,并且经过试制验证了新型铝合金铸造性能满足发动机缸盖的成型性要求;通过相图分析和显微组织观察揭示了新型铝合金的强化机理,Mg的时效强化作用优于Cu。Based on 319.0 alloy, the content of Cu and Mg was first adjusted, then other trace elements were added, and finally the new-type Al-Si-Cu-Mg aluminum alloy was formed. Compared with traditional aluminum alloys, the new alloy had better ambient and high temperature performance and its mechanical performance outwent that of traditional alloy. Using usual methods, the casting properties of Al-Si-Cu-Mg alloy were tested. Through the trial-production, it was proved that Al-Si-Cu- Mg alloy could meet the molding requirement of cylinder head. By the phase diagram analysis and microstructure observation, the strengthening mechanism of Al-Si-Cu-Mg alloy was understood and the conclusion that the aging strengthening of Mg was better than that of Cu was drawn.

关 键 词：铝合金 铸造性能 室温性能 高温性能 

分 类 号：TK405[动力工程及工程热物理—动力机械及工程]