| Development of magnesium composite alloy by a new method combining B2O3 addition and melt stirring |
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| 作者姓名： | 卜乐平 S. TANAKA M. TSUSHIDA S. ANDO H. TONDA |
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| 作者单位： | [1]Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan [2]Machinery and Electronic Engineering Institute, Inner Mongolia University of Agriculture, Hohhot 010018, China [3]Department of Materials Science and Engineering, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan |
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| 摘 要： | For developing high performance magnesium alloys, a new method in combination of B2O3 addition and melt stirring was applied. When 0.3%, 6% and 12%（ mass fraction） B2O3 was added into pure Mg, many twins were produced in each alloy. The average grain size of Mg was about 200 μm. In Mg-6Al alloy, the grain size is decreased from 50 to 35 μm by B2O3 addition. In Mg-6RE （rare earth） alloys, the grain size is decreased from 35 to 15 μm. The grain size of Mg-9Al- 6Ti-3B2O3 alloy is about 5 μm. The hardness of pure Mg does not change by B2O3 addition. In Mg-6Al alloy, the hardness is increased by addition of 3% B2O3, however, the hardness of Mg-6RE alloy is decreased by B2O3 addition. Addition of B2O3 into Mg-Al, Mg-RE and Mg-Al-Ti alloys makes the fine grain structures, the hardness of Mg-RE alloy is decreased. This strange behavior may be interpreted with existence of many fine pores in the alloy. The mechanical properties of composite Mg-9Al-6Ti with 3?O3 are higher than those of AZ91C. The present results demonstrate the potential of this new method for developing high performance magnesium alloys.
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| 关 键 词： | 镁合金 金属熔炼 有色金属 金属加工 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Development of magnesium composite alloy by a new method combining B2O3 addition and melt stirring |
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| BU Le-ping,S. TANAKA, M. TSUSHIDA, S. ANDO, H. TONDA.Development of magnesium composite alloy by a new method combining B2O3 addition and melt stirring[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):1870-1874. |
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| Authors: | BU Le-ping S TANAKA M TSUSHIDA S ANDO H TONDA |
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| Abstract: | |
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| Keywords: | magnesium alloy composite Mg-Al alloy Mg-RE alloy Mg-Al-Ti alloy B2O3 melt stirring grain size |
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