摘要
本文以压铸AZ91D镁合金为研究对象,利用扫描电镜(SEM/EDS)、X射线衍射(XRD)、拉伸试验和盐雾试验等方法研究了不同含量稀土Y的添加对镁合金力学性能及耐蚀性能的影响。试验结果表明,Y元素在AZ91D镁合金中的微量添加能有效细化合金初生相尺寸,并在合金中形成Al_(2)Y和Al_(3)Y相。Y微合金化能显著改善合金的抗拉强度和耐蚀性,但当Y元素含量过高时,Al-Y相的过量形成不利于材料综合性能的提高。
With the die casting AZ91D magnesium alloy serving as the research subject in the paper, the effects of yttrium(Y) addition with different content on the mechanical properties and corrosion resistance of magnesium alloy were investigated by using scanning electron microscope(SEM/EDS), X-ray diffraction(XRD), tensile test and salt spray test. The results showed that the trace Y addition in the AZ91D magnesium alloy could effectively refine the primary phase dimension, and phases Al_(2)Y and Al_(3)Y were formed in the alloy. Both the tensile strength and corrosion resistance of magnesium alloy could be significantly improved by Y micro-alloying, but if Y content was too high, the excess formation of Al-Y phase was detrimental to the improvement of comprehensive material property.
作者
胡晓娜
陈威
谢仕芳
朱福生
张财淦
邹晋
Hu Xiaona;Chen Wei;Xie Shifang;Zhu Fusheng;Zhang Caigan;Zou Jin(Jiangxi Key Laboratory of Advanced Copper and Tungsten Materials,Nanchang 330096,China;Longnan Longyi Heavy Rare Earth Technology Co.,Ltd.,Ganzhou 341000,China)
出处
《轻金属》
北大核心
2021年第6期45-48,共4页
Light Metals
基金
江西省重点研发计划(20192BEE50036)
中央引导地方项目(20192ZDD01002)
江西省科学院(2018-YCXY-11,2018-YYB-08,2020-YZD-2)。
关键词
Y元素
AZ91D镁合金
力学性能
耐蚀性能
Y element
AZ91D magnesium alloy
mechanical property
corrosion resistance
作者简介
胡晓娜(1989-),女,内蒙古包头人,硕士,研究方向:有色合金应用;通讯作者:邹晋(1983-),男,江西乐平人,副研究员,博士,研究方向:有色金属材料。
