Al-P和Al-Ti-B对Mg_2Si/Al复合材料显微组织的影响  

The effect of Al-P and Al-Ti-B master alloys on microstructure in Mg_2Si/Al composite

作　　者：李冲[1] 刘相法[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

出　　处：《特种铸造及有色合金》2008年第S1期329-330,共2页Special Casting & Nonferrous Alloys

基　　金：国家杰出青年科学基金项目(50625101);教育部科学技术研究重点项目(106103)

摘　　要：研究了Al-3P和Al-5Ti-1B中间合金单独加入以及同时加入时对Mg2Si/Al复合材料显微组织的影响,并探讨了其作用机理。结果表明,Al-P和Al-Ti-B中间合金均可对Mg2Si产生较好的细化和变质效果,并且Al-Ti-B对Al-P的细化变质效果有促进作用,初生Mg2Si颗粒形态由枝晶变为多边形,平均颗粒尺寸由100μm以上细化至20μm左右。The effect of Al-3P and Al-5Ti-1B master alloys in Mg2Si/Al composite was investigated in this paper. The experimental results show that the Al-P or Al-Ti-B can refine and modify primary Mg2Si, and the refinement and modification efficiency of Al-P master alloy can be improved after the addition of Al-Ti-B. The morphologies of primary Mg2Si particulates change from dendritic to polygonal shape, and their average sizes decrease from ~100μm to ~20μm.

关 键 词：铝基复合材料 初生Mg2Si 变质处理 Al-P AL-TI-B 

分 类 号：TB331[一般工业技术—材料科学与工程]