Effects of Sb, Sm, and Sn additions on the microstructure and mechanical properties of Mg-6Al-1.2Y-0.9Nd alloy
Effects of Sb, Sm, and Sn additions on the microstructure and mechanical properties of Mg-6Al-1.2Y-0.9Nd alloy
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DOI：
10.1007/s12598-009-0100-9
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发表时间：
2009-09
期刊：
影响因子：
8.8
通讯作者：
Ke-jie Li;Quan-an Li;X. Jing;Jun Chen;Xing-yuan Zhang
中科院分区：
文献类型：
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作者：
Ke-jie Li;Quan-an Li;X. Jing;Jun Chen;Xing-yuan Zhang
采用x射线衍射仪（XRD）、光学显微镜（OM）、扫描电镜（SEM）和能谱仪（EDS）研究了添加Sb、Sm、Sn后Mg-6Al-1.2Y-0.9Nd镁合金的显微组织和力学性能。结果表明，少量的Sb、Sm，尤其是Sn对合金的晶粒细化作用明显。在合金中加入Sb、Sm和Sn可分别形成高熔点的Sb3Y5、Al2Sm和nd5sn3金属间化合物。Sb和Sm可以提高合金在常温和高温下的抗拉强度。添加Sm的合金在293和423 K时抗拉强度最高。在448 K时，合金的抗拉强度最高。
The microstructure and mechanical properties of Mg-6Al-1.2Y-0.9Nd magnesium alloy with Sb, Sm, or Sn addition were investigated through X-ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). The results show that small amounts of Sb, Sm, and especially Sn can refine the grains of the alloy. High melting point Sb3Y5, Al2Sm, and Nd5Sn3intermetallic compounds can be formed respectively when Sb, Sm, and Sn are added to the alloy. Sb and Sm can improve the tensile strength of the alloy at ambient and elevated temperatures. The tensile strength of the alloy with Sm addition is the highest at 293 and 423 K. However, the tensile strength of the alloy with Sn addition is the highest at 448 K.