Al-5%Ti-0.25%C对Al-Si活塞合金组织和性能的影响  

Influence of Al-5%Ti-0.25%C Master Alloy on the Microstructures and Properties of Al-Si Piston Alloy

作　　者：乔进国[1] 刘相法[1] 冯增建 孙晓 高晓波 边秀房[1] 

机构地区：[1]山东大学材料液态结构及其遗传性教育部重点实验室,山东济南250061 [2]山东滨州渤海活塞股份有限公司,山东滨州256600

出　　处：《铸造》2004年第10期784-787,共4页Foundry

摘　　要：探讨了Al 5%Ti 0 25%C中间合金对共晶Al Si活塞合金组织和力学性能的影响。结果表明,加入0 5%的Al 5%Ti 0 25%C中间合金后,初晶Si的平均尺寸由原来的45μm降为40μm,共晶Si变短,而且能细化共晶团,提高常温抗拉强度。Al 5%Ti 0 25%C中间合金的加入量达到1%时,常温抗拉强度不再继续提高。加入Al Ti C中间合金后随着静置时间的延长,常温抗拉强度变化并不明显。The effects of Al-5%Ti-0.25%C master alloy on the microstructures and mechanical properties of eutectic Al-Si piston alloy were investigated. The results showed that the average size of primary Si can be decreased to 40μm from original 45μm,and the eutectic Si becomes short when 0.5% Al-5%Ti-0.25%C is added to the melt. The eutectic colony can be refined and the room temperature ultimate tensile strength(UTS)increases. The room temperature UTS remains constant after addition of the master alloy 1%. It is also found that the room temperature UTS keeps stable with prolonging holding time.

关 键 词：AL-TI-C中间合金 AL-SI活塞合金 晶粒细化 组织和力学性能 

分 类 号：TG292[金属学及工艺—铸造] TG146.21[一般工业技术—材料科学与工程]