微量的Zr和Y在Al-Si合金中的合金化作用  

Alloying Role of Trace Zr and Y Element in Al-Si Alloy

作　　者：黄佩武[1] 张新明[1] 李慧中[1] 梁霄鹏[1] 

机构地区：[1]中南大学

出　　处：《湖南有色金属》2006年第5期38-41,共4页Hunan Nonferrous Metals

摘　　要：通过力学性能测试和显微组织观察研究了Al-Si合金中微量的Zr和Y的合金化作用。结果表明,单独添加Y和单独添加Zr均使合金的初晶Si、共晶Si及枝晶细化,合金的强度提高,但Y的单独作用比Zr强;Zr和Y共同加入产生的细化效果最好,合金的强度最高。The alloying of Zr and Y elements in Al-Si alloy was studied by tensile tests and opitical microscopy. The results indicate that the addition of Zr and Y respectively or together in Al-Si alloy will refine the primary Si,etutectic Si and dendritic α（Al） and improve strengthening of the alloy, The refining efficieny of the alloy with addition of Y is greater than that of Zr, the maximal refining efficieny and strengthing effect will be available with addtion of Zr and Y together.

关 键 词：AL-SI合金 锆和钇 组织 力学性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]