| Al-Bi-Ce-Cu难混溶合金的凝固组织和耐磨性 |
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| 引用本文： | 满田囡,张林,项兆龙,王文斌,黄明浩,王恩刚. Al-Bi-Ce-Cu难混溶合金的凝固组织和耐磨性[J]. 稀有金属材料与工程, 2018, 47(12): 3716-3720 |
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| 作者姓名： | 满田囡 张林 项兆龙 王文斌 黄明浩 王恩刚 |
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| 作者单位： | 东北大学材料电磁过程研究教育部重点实验室,东北大学材料电磁过程研究教育部重点实验室,东北大学材料电磁过程研究教育部重点实验室,东北大学材料电磁过程研究教育部重点实验室,东北大学材料电磁过程研究教育部重点实验室,东北大学材料电磁过程研究教育部重点实验室 |
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| 基金项目： | 国家自然科学(51674083),国家自然科学资助(项目号50901019),高等学校学科创新引智计划项目资助(项目号B07015) |
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| 摘 要： | 本文研究了Al-Bi-Ce-Cu难混溶合金的凝固组织和耐磨性能。实验结果表明,添加Ce到Al-Bi合金中,原位生成的棒状化合物Bi2Ce作为异质形核质点,促进了Bi相的形核,所制备难混溶合金中富Bi相颗粒弥散分布。添加Cu到Al-Bi-Ce合金中生成了硬质相Al2Cu,硬质相增强了基体的硬度,进而提高了合金的耐磨性能,降低了合金的耐磨性系数。因此Al-Bi-Ce-Cu合金,不仅具有富Bi相颗粒弥散分布的组织,同时还具有高的耐磨性能,有很强的实际应用价值。
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| 关 键 词： | 难混溶合金 异质形核 凝固组织 耐磨性 |
| 收稿时间： | 2017-03-29 |
| 修稿时间： | 2017-06-13 |
The microstructure and wear resistance of Al-Bi-Ce-Cu immiscible alloys |
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| Man Tiannan,Zhang Lin,Xiang Zhaolong,Wang Wenbin,Huang Minghao and Wang Engang. The microstructure and wear resistance of Al-Bi-Ce-Cu immiscible alloys[J]. Rare Metal Materials and Engineering, 2018, 47(12): 3716-3720 |
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| Authors: | Man Tiannan Zhang Lin Xiang Zhaolong Wang Wenbin Huang Minghao Wang Engang |
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| Affiliation: | Key Laboratory of Electromagnetic Processing of Materials Ministry of Education,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials Ministry of Education,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials Ministry of Education,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials Ministry of Education,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials Ministry of Education,Northeastern University,Key Laboratory of Electromagnetic Processing of Materials Ministry of Education,Northeastern University |
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| Abstract: | Immiscible alloys have been investigated as a kind of alloys with special metallurgy characteristics. Liquid phase separation of Al-Bi immiscible alloys has been investigated for decades. In this work, the microstructure and the wear resistance of Al-Bi-Ce-Cu alloys were investigated. The intermetallic compounds Bi2Ce form and act as heterogeneous nucleation sites of Bi-rich droplets, which promote the nucleation of Bi phase and obtain a dispersed microstructure. The intermetallic compound Al2Cu locate in the Al-rich matrix and enhance the hardness of matrix. The wear resistance of alloys is not only dependent on the size of Bi-rich droplets but also dependent on the hardness of matrix. The refined microstructure and the strengthened hardness improve the wear resistance of Al-Bi alloys. Therefore, Al-Bi-Ce-Cu immiscible alloys is useful as a wear resistance material. |
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| Keywords: | Immiscible alloys heterogeneous nucleation Microstructure wear resistance |
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