Al-5Ti-1B和Al-P中间合金对Al-Si合金的联合变质作用  

The United Modification Effects of Al-5Ti-1B and Al-P Master Alloys on Al-Si Alloy

作　　者：丁海民[1] 刘相法[1] 于丽娜[1] 乔进国 

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]潍柴动力股份有限公司,山东潍坊261001

出　　处：《铸造》2006年第2期176-178,共3页Foundry

摘　　要：研究了Al-5Ti-1B和Al-P中间合金对Al-Si活塞合金组织和性能的影响。结果表明,加入0.2%Al-5Ti-1B中间合金能使经Al-P中间合金变质过的ZL109合金的共晶团和初晶硅进一步细化,抗拉强度也明显提高。随着Al-5Ti-1B加入量的增加这种细化作用逐渐减小,当Al-5Ti-1B的加入量为2%时甚至使ZL109中的初晶硅变粗,抗拉强度也随之降低。The effects of Al-5Ti-IB and Al-P master alloys on the microstructure and mechanical properties of eutectic Al-Si piston alloy are investigated. It is found that the eutectic and the primary Si of ZL109 alloy which has been modified by Al;P master alloy can be further refined and the mechanical properties can be improved after addition of 0.2%Al-5Ti-1B master alloy. It also can be found that those refined effects become less and less with increasing of the quantity of Al-5Ti-IB master alloy. Furthermore, when the addition amount of Al-5Ti-IB master alloy is 2%, the primary Si become roughened and the mechanical properties of ZL109 alloy decreases.

关 键 词：AL-SI合金 Al-5Ti-1B中间合金 AL-P中间合金 变质处理 

分 类 号：TG156.6[金属学及工艺—热处理]