Ca添加量对汽车用Mg-Al-Zn合金组织的影响

Effect of Ca addition on microstructure of Mg-Al-Zn alloy for automobile

运用金相显微镜(OM)、扫描电子显微镜(SEM)与能谱分析(EDS),研究了Ca含量对Mg-Al-Zn合金铸态与固溶时效态显微组织的影响。结果表明,添加Ca后,合金中出现了Al4Ca相,经过固溶时效处理后均匀弥散分布在基体中,Ca对固溶时效态合金具有良好的晶粒细化效果。

Effect of different Ca content on microstructure of as-cast,solutioned and aged Mg-Al-Zn magnesium alloy was studied by means of metallographic microscope,scanning electronic microscope and energy spectrum analysis. The results show that after adding Ca element,the Al4Ca phase appears in the alloy uniformly distributed in the matrix after solution and aging treatment,the Ca element has a good grain refining effect on solution treated and aged alloy.