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.[Man Tiannan,Zhang Lin,Xiang Zhaolong,Wang Wenbin,Huang Minghao,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.]
Al-Bi-Ce-Cu难混溶合金的凝固组织和耐磨性
投稿时间:2017-03-29  修订日期:2017-06-13
中文关键词:  难混溶合金  异质形核  凝固组织  耐磨性
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)
中文摘要:
      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。
The microstructure and wear resistance of Al-Bi-Ce-Cu immiscible alloys
英文关键词:Immiscible alloys  heterogeneous nucleation  Microstructure  wear resistance
英文摘要:
      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.
作者单位E-mail
满田囡 东北大学材料电磁过程研究教育部重点实验室 2810567782@qq.com 
张林 东北大学材料电磁过程研究教育部重点实验室  
项兆龙 东北大学材料电磁过程研究教育部重点实验室  
王文斌 东北大学材料电磁过程研究教育部重点实验室  
黄明浩 东北大学材料电磁过程研究教育部重点实验室  
王恩刚 东北大学材料电磁过程研究教育部重点实验室  
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