摘要
通过正交试验设计,研究了Cd、Sb、RE复合加入对AZ31镁合金铸态组织和力学性能的影响。Cd、Sb、RE复合加入后,AZ31镁合金铸态组织由富Al的α-Mg基体和均匀、弥散分布的析出相β-Mg17Al12、CeSb及Al11Ce3组成,Cd固溶于基体不形成新相。通过分析,得出对综合力学性能影响最优的试验方案是:Cd含量0.7%,Sb含量0.3%,RE含量0.3%;与AZ31相比,抗拉强度、伸长率、布氏硬度分别提高了22.9%、17.6%、5.9%。
The investigation was carried out on effects of Cd, Sb, RE on the as-cast microstructure and mechanical properties of AZ31 magnesium alloy with orthogonal test. With complex addition of Cd, Sb, and RE, the as-cast microstructure of AZ31 alloy is consisted of the Al-riched α-Mg matrix, the uniformly distributed β-Mg17Al12, CeSb and Al11Ce3. Cd dissolved into the matrix of AZ31 alloy and no new phase formed. Through analysis the best mechanical properties of the alloy can be obtained as content of Sb is 0.3%, Cd 0.7%, RE 0.3%, and the tensile strength, elongation and Brinell hardness of the experimental alloy are increased by 22.9%, 17.6% and 5.9%, respectively.
出处
《铸造》
CAS
CSCD
北大核心
2009年第10期1050-1053,共4页
Foundry
关键词
正交设计
AZ31镁合金
显微组织
力学性能
orthogonal design
AZ31 magnesium alloy
microstructure
mechanical properties