| 稀土Nd对AZ 31镁合金铸态组织和力学性能的影响 |
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| 引用本文： | 柏媛媛,魏汝飞,董方,乐启炽,张志强,宝磊.稀土Nd对AZ 31镁合金铸态组织和力学性能的影响[J].材料与冶金学报,2017,16(1). |
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| 作者姓名： | 柏媛媛 魏汝飞 董方 乐启炽 张志强 宝磊 |
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| 作者单位： | 1. 东北大学材料电磁过程研究教育部重点实验室,沈阳,110819;2. 安徽工业大学冶金工程学院,安徽马鞍山,243002;3. 内蒙古科技大学材料与冶金学院,内蒙古自治区包头,014010 |
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| 基金项目： | 国家重点研发计划"重点基础材料技术提升与产业化"重点专项 |
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| 摘 要： | 利用气氛电阻炉制备了AZ 31-xNd合金(x=0.05%,0.1%,0.2%,0.4%,0.6%),采用光学显微镜(OM)、扫描电子显微镜(SEM)和电子能谱分析仪(EDS)对不同Nd含量的实验合金进行了显微组织观察和分析,结果发现,Nd在AZ 31-xNd合金中形成了Al_3Nd和Mg_(12)Nd相,这些含Nd相导致AZ 31镁合金在凝固过程中的晶粒细化,从而提高了AZ 31镁合金的铸态室温力学性能,随着Nd含量的增加,合金的铸态室温抗拉强度极限和延伸率均先升高后降低.
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| 关 键 词： | AZ 31镁合金 稀土 第二相 组织 力学性能 |
Effect of neodymium on the as-cast microstructure and mechanical properties of AZ 31 magnesium alloy |
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| Bai Yuanyuan,Wei Rufei,Dong Fang,Le Qichi,Zhang Zhiqiang,Bao Lei.Effect of neodymium on the as-cast microstructure and mechanical properties of AZ 31 magnesium alloy[J].Journal of Materials and Metallurgy,2017,16(1). |
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| Authors: | Bai Yuanyuan Wei Rufei Dong Fang Le Qichi Zhang Zhiqiang Bao Lei |
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| Abstract: | An AZ 31-xNd alloy was made in an atmosphere resistance furnace (x=0.05%, 0.1%, 0.2%, 0.4%, 0.6%).The microstructure observation and analysis of the alloy with different neodymium content were carried out by optical microscopy (OM), scanning electron microscopy (SEM) and electron spectroscopy analyzer (EDS).The experimental results shows that neodymium formes Al3Nd and Mg12Nd phases in the AZ 31-xNd alloy, causing grain refinement of AZ31 magnesium alloy, thus improving the mechanical properties at the room temperature.The as-cast ultimate strength and elongation first increases and then decreases with increase of neodymium content. |
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| Keywords: | AZ 31 magnesium alloy rare earth second phase microstructure mechanical properties |
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