| Ce、Y和Gd对Mg-3Sn-2Sr镁合金铸态组织和力学性能的影响(英文) |
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| 引用本文： | 杨明波,侯梦丹,张佳,潘复生.Ce、Y和Gd对Mg-3Sn-2Sr镁合金铸态组织和力学性能的影响(英文)[J].中国有色金属学会会刊,2014,24(8):2497-2506. |
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| 作者姓名： | 杨明波 侯梦丹 张佳 潘复生 |
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| 作者单位： | 重庆理工大学汽车零部件制造及检测技术教育部重点实验室;重庆理工大学材料科学与工程学院;重庆大学国家镁合金工程材料研究中心; |
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| 基金项目： | Project(CSTC2013jcyjC60001)supported by the Chongqing Science and Technology Commission of China;Project(KJ120834)supported by the Chongqing Education Commission of China;Project(CQUT1205)supported by the Open Funds from Key Laboratory of Manufacture and Test Techniques for Automobile Parts,Ministry of Education,Chongqing University of Technology,China |
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| 摘 要： | 通过扫描电镜、X射线衍射、差热分析以及抗拉和蠕变性能测试等手段,调查和比较了Ce、Y和Gd对Mg-3Sn-2Sr镁合金铸态组织和力学性能的影响。结果表明:Mg-3Sn-2Sr三元合金主要由?-Mg、初生和共晶SrMgSn以及Mg2Sn相组成。当添加1.0%Ce、1.0%Y和1.0%Gd到Mg-3Sn-2Sr合金后,合金中分别形成了Mg12Ce、YMgSn、GdMgSn和/或Mg17Sr2相。同时,合金中初生SrMgSn相的形成被抑制,且呈针状的粗大初生SrMgSn相也被变质和细化。此外,添加1.0%Ce、1.0%Y和1.0%Gd均能同时改善Mg-3Sn-2Sr合金的抗拉性能和蠕变性能。在含Ce、Y和Gd合金中,含Ce合金的抗拉性能相对较含Y和含Gd合金的高。
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| 关 键 词： | Mg-Sn-Sr镁合金 Ce Y Gd SrMgSn相 |
| 收稿时间： | 22 July 2013 |
Effects of Ce,Y and Gd additions on as-cast microstructure and mechanical properties of Mg-3Sn-2Sr magnesium alloy |
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| Ming-bo YANG;Meng-dan HOU;Jia ZHANG;Fu-sheng PAN.Effects of Ce,Y and Gd additions on as-cast microstructure and mechanical properties of Mg-3Sn-2Sr magnesium alloy[J].Transactions of Nonferrous Metals Society of China,2014,24(8):2497-2506. |
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| Authors: | Ming-bo YANG;Meng-dan HOU;Jia ZHANG;Fu-sheng PAN |
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| Affiliation: | Ming-bo YANG;Meng-dan HOU;Jia ZHANG;Fu-sheng PAN;Key Laboratory of Manufacture and Test Techniques for Automobile Parts, Ministry of Education,Chongqing University of Technology;Materials Science and Engineering College, Chongqing University of Technology;National Engineering Research Center for Magnesium Alloys, Chongqing University; |
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| Abstract: | The effects of Ce, Y and Gd additions on the as-cast microstructure and mechanical properties of Mg–3Sn–2Sr alloy were investigated and compared by scanning electron microscopy, X-ray diffraction, differential scanning calorimetry analysis, tensile and creep tests. The results indicate that the Mg–3Sn–2Sr ternary alloy is mainly composed of α-Mg, primary and eutectic SrMgSn, and Mg2Sn phases. After the additions of 1.0% Ce, 1.0% Y and 1.0% Gd to the Mg–3Sn–2Sr alloy, the Mg12Ce, YMgSn, GdMgSn and/or Mg17Sr2 phases are formed, respectively. At the same time, the formation of the primary SrMgSn phase is suppressed and the coarse needle-like primary SrMgSn phase is modified and refined. In addition, the additions of 1.0% Ce, 1.0% Y and 1.0% Gd to the Mg–3Sn–2Sr alloy can simultaneously improve the tensile and creep properties of the alloy. Among the Ce-, Y- and Gd-containing alloys, the tensile properties of the Ce-containing alloy are relatively higher than those of the Y- and Gd-containing alloys. |
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| Keywords: | Mg–Sn–Sr alloys Ce Y Gd SrMgSn phase |
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