Al-5%Ti-0.07%B对Al-Si活塞合金组织和性能的影响  

Influence of Al-5%Ti-0.07%B Master Alloy on the Microstructure and Properties of Al-Si Piston Alloy

作　　者：乔进国[1] 刘相法[1] 冯增建 孙晓 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》2003年第9期679-681,共3页Foundry

基　　金：教育部科学技术研究重点项目(编号:重点01105)

摘　　要：研究了Al 5%Ti 0 07%B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Al 5%Ti 0 07%B中间合金能细化共晶团。当加入时间不超过10min时,合金的初晶Si得到细化,硬度和抗拉强度都有所提高,当加入时间超过30min,合金的初晶Si和共晶Si都明显粗化,室温抗拉强度略有降低,硬度和高温抗拉强度略有提高。The AlTiB master alloy is used widely in the industrial production. The effects of Al5%Ti007%B master alloy on the microstructure and mechanical properties of eutectic AlSi piston alloy were investigated. The results showed that the eutectic colony can be refined. When adding time is less than 10 minutes, the primary Si is refined and the hardness & ultimate tensile strength(UTS)increase. After 30 minutes, the primary Si and eutectic Si coarsen distinctly, but the room temperature UTS decreases, hardness & high temperature UTS increases appreciably.

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

分 类 号：TG146.2[一般工业技术—材料科学与工程]