| 磁场对Bi-Mn合金两相区中MnBi相定向排列的影响 |
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| 引用本文： | 王晖,任忠鸣,邓康,徐匡迪.磁场对Bi-Mn合金两相区中MnBi相定向排列的影响[J].中国有色金属学报,2002,12(3):556-560. |
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| 作者姓名： | 王晖 任忠鸣 邓康 徐匡迪 |
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| 作者单位： | 上海大学,材料科学与工程学院,上海,200072 |
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| 基金项目： | 国家自然科学基金资助项目(59871026) |
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| 摘 要： | 对不同成分Bi Mn合金在液固两相区和凝固过程中加磁场 ,考察磁场的磁感应强度和加热温度对合金中MnBi相的影响。结果发现 ,MnBi相沿磁场方向定向排列并且聚合长大 ,形成规则的棒状凝固组织。Bi Mn合金中MnBi相在磁感应强度为 0 .1T的磁场中就能够明显地沿磁场方向排列 ,MnBi相定向排列因子Γ随磁感应强度的增大和加热温度的升高而提高。在相同强度的磁场中 ,含Mn 6 % (质量分数 )的合金中 ,MnBi相定向排列所需的加热温度高于含Mn 3%的合金
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| 关 键 词： | 磁场 Bi-Mn合金 MnBi 凝固 定向排列 |
| 文章编号： | 1004-0609(2002)03-0556-05 |
| 修稿时间： | 2001年6月5日 |
Effects of static magnetic field on alignment structure of MnBi phase in semi-silidified Bi-Mn alloy |
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| WANG Hui,REN Zhong-ming,DENG Kang,XU Kuang-di.Effects of static magnetic field on alignment structure of MnBi phase in semi-silidified Bi-Mn alloy[J].The Chinese Journal of Nonferrous Metals,2002,12(3):556-560. |
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| Authors: | WANG Hui REN Zhong-ming DENG Kang XU Kuang-di |
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| Abstract: | The influences of magnetic flux density and heating temperature on alignment of the MnBi phase in mushy zone and during solidification of Bi-Mn alloy with a magnetic field were investigated experimentally. The results show that the MnBi crystals grow up and align along the field so that a regular club-shaped structure is formed. The alignment degree of MnBi increases with the increase of magnetic flux density and heating temperature and 0.1?T magnetic field is enough to make the MnBi crystals aligned. The heating temperature needed to form aligned MnBi in 6%Mn(mass fraction) alloy is higher than that in 3%Mn alloy. |
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| Keywords: | magnetic field Bi-Mn alloy MnBi solidification alignment |
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