RE和Ti对Al-Mg-Si导体材料组织和性能的影响

Effects of Rare Earth and Titanium on Microstructure and Properties of Al-Mg-Si Conductive Material

在Al-Mg-Si合金中添加稀土和钛,采用OM,SEM和EDS对合金显微组织进行分析,并通过性能测试,研究稀土和钛对Al-Mg-Si导体材料组织和性能的影响.研究表明:RE和Ti对Al-Mg-Si导体材料均有细化作用.当合金中RE和Ti质量分数分别超过0.3%和0.15%时,稀土元素Ce和Ti发生反应,生成Al20Ti2Ce相,消耗熔体中大量的Ti和Ce,对合金的力学性能和导电性能有不利影响.

We added rare earth and titanium in Al-Mg-Si alloy,and the influence of rare earth and titanium on the microstructure and properties of Al-Mg-Si conductive material were studied in this paper,with the optical microscope,scanning electron microscope,DSC analysis on the microstructure of alloy,and testing the performance. The results show that,RE and Ti both have refining effect on Al-Mg-Si conductive material. When the content of RE is more than 0. 3% and the Ti is more than 0. 15%,the phase Al20Ti2 Ce will form in AlMg-Si alloy,consuming a large amounts of Ti and Ce,which has an unfavorable effect on the mechanical properties and electrical conductivity of the alloy.