| Mg-9Al-xSr合金的高温性能 |
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| 引用本文： | 范晋平,许并社,王社斌,刘璐.Mg-9Al-xSr合金的高温性能[J].材料热处理学报,2011,32(Z1). |
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| 作者姓名： | 范晋平 许并社 王社斌 刘璐 |
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| 作者单位： | 1. 新材料界面科学与工程教育部重点实验室,山西太原030024;山西省新材料工程技术研究中心,山西太原030024;太原理工大学材料科学工程学院,山西太原030024
2. 太原理工大学材料科学工程学院,山西太原,030024 |
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| 基金项目： | 国家自然科学基金(2010jc13); 山西省归国留学人员科研项目(2008-39) |
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| 摘 要： | 在ZRR-M10型真空电阻炉中制备了3种不同锶添加量的Mg-9Al-xSr镁合金试样.用金相显微镜、X射线衍射仪以及WE230型加载高温炉的液压万能拉伸机机等分析了不同锶添加量对Mg-9Al-xSr镁合金组织及高温力学性能的影响.结果表明:合金中的锶元素主要分布于枝晶界,锶元素的添加能够明显细化合金组织,随着锶添加量的进一步增加,合金进一步得到细化,但细化效果有所减弱；随着锶添加量的增加,合金的相组成不同,主要的相组成分别为α-Mg+ Al4Sr,α-Mg+ Al4Sr+ Al2Sr及α-Mg+Al2Sr;适量锶的添加能有效改善合金常温及高温性能,随着锶添加量的增加,合金中的脆性铝锶析出相的增多,合金性能呈下降趋势变化.
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| 关 键 词： | 镁合金 锶 微观组织 高温性能 |
Properties of Mg-9Al-xSr at elevated temperature |
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| FAN Jin-ping
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XU Bing-she
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WANG She-bin
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LIU Lu.Properties of Mg-9Al-xSr at elevated temperature[J].Transactions of Materials and Heat Treatment,2011,32(Z1). |
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| Authors: | FAN Jin-ping XU Bing-she WANG She-bin LIU Lu |
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| Affiliation: | FAN Jin-ping 1,2,3,XU Bing-she1,WANG She-bin1,LIU Lu3(1.Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan 030024,China,2.Shanxi Research Center of Advanced Materials Science and Technology,3.College of Materials Science and Engineering,Taiyuan University of Technology,China) |
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| Abstract: | Three kinds of Mg-9Al-xSr alloys were prepared in ZRR-M10 vacuum resistance furnace.Effects of Sr element addition on the mechanical properties at room temperature and elevated temperature and microstructure of Mg-9Al-xSr alloys were investigated by OM,XRD and WE230-type oil pressure drawframe machine and so on.The results show that Sr distributs over grain boundaries mainly in alloys,Sr element addition fines alloy microstructure obviously but the fine degree weakens with more Sr addition;phase composition... |
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| Keywords: | Mg alloy Sr microstructure elevated temperature properties |
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